0
A right triangle has a leg the length of 19 an the base the length of 12 what is the last leg length?
Wiki User
∙ 14y ago
It depends on whether the leg of length 19 is the hypotenuse or not.
If it is then the length of the other leg = sqrt(192 - 122) = sqrt(217) = 14.731 units
If not, then the length of the other leg (which is the hypotenuse) = sqrt(192 + 122) = sqrt(505) = 22.472 units.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
How many right angles does a right triangle contain?
A Right Angle Triangle contains one right angle.A right angle has a magnitude of 90°, or in radians (pi/2). A triangle has three angles forming the closed shape, the addition of which gives an angle of 180°, or pi radians. With two right angles, the addition of these alone gives 180° (pi radians), and therefore the last angle has a null value. This is impossible and therefore leads to the conclusion that no triangle can have more then one right angle.As the definition of a Right Angle Triangle requires an angle of 90°, and no triangle can have two of these angles a Right Angle Triangle must have exactly one right angle.
If a triangle has an angle that measures 64.6 degeers and an angle that measures 18.7 degrees what's the last measurement?
180 - 64.6 - 18.7 = 96.7 degrees
How can you tell whether two polygons are similar?
Polygons will be similar if they have the same number of sides AND all of their angles are the same. All of their angles are the same if all but one of their angles are the same because with the same number of sides the angles must add up to the same thing. All squares are similar (4 right angles and sides of equal lenght). All rectangles are similar (4 right angles). We know two triangle are similar if two or mare angles are the same, or if one angle is the same and the two adjacent sides are the same length. Variations of this last proof may apply to some other polygons.
What is the actual length of a 2 x 4 x 8?
In lumber, a 2x4 represents the width and height of the wood. The last number describes the length. A 2x4x8 is eight feet long.
What is the length of a side of an equilateral triangle whose altitude has a length of 18?
This is going to take some drawing, and a calculator, but first let's get the facts. An equilateral triangle is also equiangular, meaning all angles are 60 degrees. The altitude, meaning starting from a vertex it to a direction so that it is perpendicular to the opposite side, is 18 in length.OK, now for the drawing. An equiangular triangle with a line through the middle. The line in the middle is the altitude at 18. Now, ignore the entire left side of the triangle (or the right, but for this we're ignoring the left). We know that the angle to the far right is 60 degrees because of the whole triangle being equiangular. The bottom angle at the altitude is 90 degrees because the altitude forms a right angle. Because of this, we know the last angle is 30 degrees, because all angles must add up to be 180 degrees. This is a special type of triangle, 30-60-90. They have two formulas. For the formulas, L is the long side which is the side opposite the 60 degree angle. S is the short side, which is the angle opposite the 30 degree angle. H is the hypotenuse, which is the side opposite the 90 degree angle. The formulas are H = S√3 and L = 2S. The 18 altitude is the long, opposite the 60 degree angle. One of the sides of the whole triangle would be the hypotenuse, opposite the right angle. To find the hypotenuse, we must first find the short, and for that we need the long. We know the long is 18, so the whole formula is H = ((1/2)L)√3 or H = (L/2)√3. The longer way is one formula at a time. Plugged in, the formula is 18 = 2S, S = 9. H = 9√3, H = 15.58845727... With the whole formula, H = ((1/2)18)√3 or H = (L/2)√3, your answer is still 15.58845727... Most teachers will just let you leave it as 9√3.There's a second way to solve this using sine, cosine, or tangent. (You're calculator must be in degree mode). Back to the drawing of half the triangle, you must use one of the three modes depending on the angle you start at. You cannot start at the right angle, you must start at the 30 or 60. O = opposite, H = hypotenuse, A = adjacent. The three formulas are sin = O/H, cos = A/H, and tan = O/A. In relation to the 30 angle, 18 is the adjacent and the side we need is the hypotenuse, so we use cosine. cos30 = 18/x. when the x is on the bottom, u switch x with the other side of the equal sign. x = 18/cos30. That will give you the answer of 20.78460969... PLEASE KEEP IN MIND THAT SINE, COSINE, AND TANGENT ARE NOT ALWAYS EXACT. THE ANSWER IS CLOSE TO THE OTHER ANSWER WE GOT, SO IT'S GOOD. In relation to the 60 angle, 18 is the opposite and the side we need is hypotenuse, so we use sine. sin60 = 18/x. Again, just switch. x = 18/sin60. This will give you the answer of 20.78460969...
How do you find Ares and perimeter on a tringle?
-- Area of a triangle = 1/2 of (length of the base times height) -- Perimeter of a triangle = (length of one side) + (length of another side) + (length of last side)
How do you find the side of a right triangle with base and height?
square both the base and the height and add that together, and then take the square root of that answers and that's the last sideThis is called the Pythagorean Theorem: a2+b2=c2 where a and b are the legs (base and height) and c is the hypotenuse (or longest side)* * * * *That is true, but only if the triangle is a right angled triangle. In other cases, the answer is indeterminate.
What is the length of the third side of a triangle that has two sides of 5 inches?
The length of the last side cannot be determined exactly. But we can narrow it down. The third side will have length l, and 0" < l < 10". The last side will have a length greater than zero inches but less than 10 inches, and the inequality says that nicely.If it is a right triangle it is a 45 45 90 so the other side is square root 2 x 5
What describes a triangle with two 45 dergree angles?
Right Triangle A rightangled triangle, since the last angle has to be 90 degrees
What does a right angle scalene triangle look like?
If this makes sense.... something like this |\ | \ |___\ A three sided polygon that has one right (90 degree) angle and all three sides have different lengths
When a man walks 5m towards east and turns right and moves 12m the magnitude of his displacement is 13m how?
It is down to trigonometry. You have two parts of a triangle, so you are looking for the length of the last line. As the man turned right, there will be a right angle in the triangle. As we have two sides, the 12m and 5m, using Pythagoras theorem we can work out the length of the last side. The square of the hypotenuse is equal to the square of the other two sides. 12 x 12 = 144. 5 x 5 = 25. 144 + 25 = 169. 13 x 13 = 169. So the length of the other side is 13.
If a triangle has a side is equal to 6 cm and the other side 4 cm what is the last side equal to?
It can be any length that's more than 2 cm and less than 10 cm. And it also depends on the type of triangle. If it were to be a right triangle, then the last side would be about 7.21 cm. If it were a scalene, then it could be of any length. (just as long as it's more than 2 cm and less than 10 cm, like the first answer said)
What is the angle measure for a triangle?
The angle measure of a triangle is dependent on the type of triangle (scalene, right, isosceles, or equilateral) and also the measures of the other two angles.In a scalene, none of the angles can be predicted without a protractor because none of the angles are equal.In a right triangle only one angle can be undoubtedly determined, the 90° angle (right angle). Knowing this angle's measure, this only limits the possible angle measures of the other two angles. (They must each be less than 90°, but together sum up to 90°)If you know one of the base angles of an isosceles triangle, by the Isosceles Triangle Base Angles Theorem, the other base angle will be congruent. To find the last angle, add the base angles together and then subtract that number from 180.The only triangle that has angle measures that can be determined just by its name is an equilateral, all angle measures equal 60°.
What is the last angle of a right triangle with a 90 degree and 43 degree angle?
47
If two sides of a triangle are 3 and 7what is the possible lengths for the third side of the triangle?
The last side length could be between 4 units and 10 units inclusive.
Can a congruent triangle have 2 same sides?
congruent means equivalent. An equilateral triangle has 3 of the same sides, not two. Isosceles triangles can have 2 or 3 of the same length sides. Congruent isosceles triangles are impossible.I agree with most of the above answer but not the last sentence. It is possible to have congruent isosceles triangles. If the legs (sides) of triangle 1 are the same length as the legs of triangle 2, and the bases (third side) of the two triangles are the same length then the two isosceles triangles will be congruent.So the answer to the question is: yes, a congruent triangle can have two same length sides.
How many right angles does a right triangle contain?
A Right Angle Triangle contains one right angle.A right angle has a magnitude of 90°, or in radians (pi/2). A triangle has three angles forming the closed shape, the addition of which gives an angle of 180°, or pi radians. With two right angles, the addition of these alone gives 180° (pi radians), and therefore the last angle has a null value. This is impossible and therefore leads to the conclusion that no triangle can have more then one right angle.As the definition of a Right Angle Triangle requires an angle of 90°, and no triangle can have two of these angles a Right Angle Triangle must have exactly one right angle.
