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I think you have not asked the question correctly.
I guess you meant that the sides of the triangle are 3, 4 and 5. Similarly you have given no indication of which angle is opposite which side.
A 3, 4, 5 triangle is a right angle triangle (5 is the hypotenuse).
Thus depending where angle B is, its sine will be:
- If B is opposite the side of length 3, sin B = 4/5
- If B is opposite the side of length 4, sin B = 3/5
- If B is opposite the side of length 5, sin B = 5/5 = 1; alternatively ∠B = 90° and sin B = sin 90° = 1
What else can I help you with?
The 3 angels of a triangle are in the ratio of 2 to 3 to 4 what is the measure of the greatest angle?
The angles are: 40, 60 and 80 degrees
How many right angles can a quadrilateral have?
a quadrilateral can have from 0 to 4 right angles. But it can't have exactly three right angles. The interior angles of a quadrilateral sum to 360 degrees. If it had three right angles and x were the measure of the fourth angle: 3*90+x=360 x=360-270=90 So if it has three right angles, the fourth angle would be a right angle as well.
Angle 4 equals 25 degrees what are the missing angles?
If it's a quadrilateral then the other 3 angles must add up to 335 degrees because a 4 sided quadrilateral contains 360 degrees
Does a parallelogram rectangle have a reflex angle?
No, parallelograms and rectangles cannot have reflex angles. This is because 1. The sum of their interior angles must be 360 degrees. 2. Opposite angles must be equal. 3. If it were the case that a reflex angle existed, two angles would have to be greater than 180 by 2. 4. But by 1, the two angles would now sum over 360, and that cannot occur for a four-sided polygon.
If θ is an acute angle and sin θ equals 2 then cos θ?
it equals 4
Is it possible to have a triangle whose angle measures are in the ratio 3 to 4 to 5 and whose side lengths are the same ratio?
No. If the angles are in the ratio 3:4:5, the sides will be in the ratio sin(3):sin(4):sin(5) - NOT in the ratio 3:4:5.
Can you write a two column proof given angles 2 and 3 are congruent and prove angles 1 and 4 are congruent?
Without a visual or more information, I'm guessing that the picture is of angles 1 and 2 that are consecutive (share an angle side) and a separate picture of consecutive angles 3 and 4. With that said: 1) angle 2 congruent to angle 3................1) given 2) angle 1 is supplementary to angle 2....2) If angles are next to each other --> supps angle 3 is supplementary to angle 4 3) angle 1 congruent angle 4..............3) If supps to congruents angles ---> congruent
How many sides and angles does a paralleogram have?
4 angles and 4 sides .................. side 1......................... ............ ____________................. ............/..................... /................. side 3./....................../..side 2....... ........./ ...................../.................... ......../___________/..................... ..................................................... .................side 4........................... ..................................................... ..................................................... ....angle 1 ____________angle 2 .............. /....................../............. ............../....................../ ............. ............./....................../............... angle 3/___________/angle 4..... ..................................................... .....................................................
Which pairs of angles are vertical angles?
Actually, It is this. Question: Angle 1 and 4 are called ___ angles? Answer: Supplementary
What is the measure of angle 4 of angles and parallel lines?
In a situation involving parallel lines and a transversal, the measure of angle 4 can be determined based on its relationship to other angles formed by the transversal. If angle 4 is an alternate interior angle to another angle (for example, angle 3), then angle 4 will be equal to that angle. If angle 4 is a corresponding angle to another angle (e.g., angle 1), it will also be equal. To find the exact measure, you would need the measure of one of the related angles or additional information.
Sin3alfa equals to?
The expression (\sin(3\alpha)) can be expanded using the triple angle formula for sine, which is (\sin(3\alpha) = 3\sin(\alpha) - 4\sin^3(\alpha)). This formula allows you to express (\sin(3\alpha)) in terms of (\sin(\alpha)).
What is a counterexample for all intersecting lines form right angles?
Say angle 1 is 40 which means that if angle 3 is congruent then angle 3 is also 40 by definition of vertical angles. That would make angle 2 equal to 140 by definition of a linear pair and so angle 4 is congruent by vertical angles.
Can you make a triangle with any number?
no because simply the triangle means 3 angles.(tri - 3) so you make 3 angle out of lets say 4 angles no because a triangle has to be 3 ANGLES,
What shape has Three right angles and one acute angle and one obtuse angle?
you cannot make a regular shape which has 3 right angles only, you will always end up with 4 right angles
To prove that two lines cut by a transveral are parallel on must show that?
You can show that two lines cut by a transversal are parallel in a number of ways. (1) Show that the consecutive interior angles are supplementary. Let's say your lines are arranged like this (ignore the periods, they're just there so the spacing is right): ......................1 | 2 --------------------|----------------------- .......................8| 3 .........................| ......................7 | 4 --------------------|----------------------- ......................6 | 5 If the lines are parallel, the measures of all the consecutive interior angles should be supplementary. The following should be true: Angle 8 + Angle 3 = 180 degrees Angle 3 + Angle 4 = 180 degrees Angle 4 + Angle 7 = 180 degrees and Angle 7 + Angle 8 = 180 degrees (2) You can also prove that the lines are parallel by showing that the corresponding angles are congruent. Using the line arrangement above, prove any of the following to be true: Angle 1 = Angle 7 Angle 2 = Angle 4 Angle 3 = Angle 5 or Angle 8 = Angle 6 (3) Finally, you can use alternate angles (either interior or exterior). To use alternate interior angles, prove that: Angle 3 = Angle 7 or Angle 4 = Angle 8 To use alternate exterior angles, prove that: Angle 1 = Angle 5 or Angle 2 = Angle 6 Well, there you have it! Best of luck!
Do qaudrilaterals have 3 right angles?
Quadrilaterals are polygons having four sides. Quadrilaterals may have 1, 2, or 4 right angles. It is impossible for a quadrilateral to have exactly 3 right angles because the fourth angle would also be a right angle.
What makes a quadrilateral unique?
4 sides and 1 diagonal is given. 3 sides and 2 diagonals are given. 3 angles and measurement of two adjacent angles are given. 3 sides and 2 included angles are given. 4 sides and 1 angle is given.
