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What else can I help you with?
Can you transform sine functions into cosine functions?
If you know the measure of one angle, and the length of one side of a triangle, you can find the measures of the other sides and angles. From there, you can find the values of the other trig functions. cos (x) = sin (90-x) in degrees there are other identities such as cos^2+sin^2=1, so cos^2=1-sin^2
What is the law of cosines?
It is a mathematical equation that allows you to "solve" a triangle (find all length and angle values), if you know 2 sides and an included angle, or all three sides. It doesn't have to be a right triangle. You can find the cosine on a calculator easily.c2 = a2 + b2- 2ab cos CC = included anglec = side opposite angle C (c)a = side ab = side bThe cosine law relates the length of the sides of a triangle to one of the angles in the triangle. If the triangle is labelled with vertices A, B, C with usual notation for edges (ie a is the side opposite the vertex A, so not touching A) and if x is the angle at vertex C then the cosine law says (c^2)=(a^2)+(b^2)-2abcos(x)
Find the length of the side opposite angle a?
It depends on what else you know. If it is a non-right triangle, and you only know angle a, it is impossible to fing side A (the side opposite an angle usually has the same letter, but capitalized). If you know the other two sides, then I would use the law of cosines: For a triangle with sides A B C A = √(B2+C2-(2*B*C*(cos (a)))) If you know another angle and one side, I would use the law sines: A/(sin a) = B/(sin b) therefore, A = (sin a) * B/(sin b) If it is a right triangle, and you know another side, than your job is even easier: If you know the hypotenuse (side C), than: A = C *(sin a) If you know the adjacent side (side B), than: A = B * (tan a)
Which of these angles is coterminal with 32?
-5pi/2
What do all the angles in a obtuse triangle if the obtuse angle is 120 Degrees?
If triangle has one obtuse angle other two angles are acute. Since, sum of angles of triangle is 180.
Find the angles in a quatrilateral when you know 2 angles?
The sum of all four angles is 360 degrees. Thus, you have insufficient information to know the individual angles; you can only know their sum, which is 360 minus the sum of the other two angles.
How do you find values for the third side of a triangle?
Perimeter -2 known sides = 3rd side 180 -2 known angles = 3rd angle
How do you find the perpendicular distance in a triangle?
The answer will depend on what information you do have.If you know two sides and the included angle you can find the area. Then perpendicular distance = 2*Area/Base.If you know all three sides then you can use the cosine rule to find one of the angles. Then, you have two sides and the included angle and can proceed as above. Actually, you can find the area directly from the three sides.If you know one side and two angles, you effectively know one side and all three angles. You can use the sine rule to find one of the other sides and then you have two sides and an included angle and so can proceed as before.There are more complicated solutions where other measures are known.The answer will depend on what information you do have.If you know two sides and the included angle you can find the area. Then perpendicular distance = 2*Area/Base.If you know all three sides then you can use the cosine rule to find one of the angles. Then, you have two sides and the included angle and can proceed as above. Actually, you can find the area directly from the three sides.If you know one side and two angles, you effectively know one side and all three angles. You can use the sine rule to find one of the other sides and then you have two sides and an included angle and so can proceed as before.There are more complicated solutions where other measures are known.The answer will depend on what information you do have.If you know two sides and the included angle you can find the area. Then perpendicular distance = 2*Area/Base.If you know all three sides then you can use the cosine rule to find one of the angles. Then, you have two sides and the included angle and can proceed as above. Actually, you can find the area directly from the three sides.If you know one side and two angles, you effectively know one side and all three angles. You can use the sine rule to find one of the other sides and then you have two sides and an included angle and so can proceed as before.There are more complicated solutions where other measures are known.The answer will depend on what information you do have.If you know two sides and the included angle you can find the area. Then perpendicular distance = 2*Area/Base.If you know all three sides then you can use the cosine rule to find one of the angles. Then, you have two sides and the included angle and can proceed as above. Actually, you can find the area directly from the three sides.If you know one side and two angles, you effectively know one side and all three angles. You can use the sine rule to find one of the other sides and then you have two sides and an included angle and so can proceed as before.There are more complicated solutions where other measures are known.
Are triangles congruent if so how do you know?
ASA stands for "angle, side, angle" and means that we have two triangles where we know two angles and the included side are equal. If two angles and the included side of one triangle are equal to the corresponding angles and side of another triangle, the triangles are congruent.
What shape have 2 acute angles and 2 obtuse angles and1 pair of parallel lines.I have 1 short side and 1 long side?
Some trapezoids have 2 acute angles, 2 obtuse angles, 1 pair of parallel lines, 1 short side, and 1 long side.
How do you use the law of sines?
The Law of Sines can be used to find unknown parts (a side or angle) of a triangle. For example if you know 2 angles and a side, or if you know 2 sides and 1 angle (depending on how they are oriented). Visit the Maths Is Fun site (link posted below) for a more graphical explanation.
How do you calculate the angles in a triangle?
The angles in a triangle add up to 180 so one can calculate depending on the type of question or information given. For example;when one is given a scalene triangle, one can calculate the missing angle by equating all the angles to 180 and then find the missing one.
Do supplementary angles have to have a common side?
Yes. 2 supplementary angles are angles that share a common side and add up to 180 degrees.
You have 4 side the same length 2 acute angles and 2 obtuse angles?
rhombus
How do you find the angles of a rhombus with a side length of 5 and 2?
A rhombus has all four sides the same length.
How do you find the area of a triangle if the length of two sides is unknown?
It depends on what IS known. If you know one side and the perpendicular distance from that side to the opposite vertex then it is 1/2*side*perp distance. If you know two angles (and so all three) you can use the sine rule to calculate both the missing sides.
How do you figure out the length of one side of a triangle with the length of other two sides?
C^2=A^2+B^2. Pythagorean theorem. Note that this is only true for Right triangles (one of the angles is 90°). Side C is the longest side and is opposite the 90° angle. For any other triangle, you need at least 3 pieces of information (2 sides and an angle, or 2 angles and a side) to find the other parts of the triangle. In a right triangle, if you know 2 sides, then you have 3 pieces of info (one of the angles is 90°). For non-right triangles, you can use the Law of Sines or Law of Cosines to solve for the unknown information.
