0
Still curious? Ask our experts.
Chat with our AI personalities
Rafa
Coach
ViviAdd your answer:
Earn +20 pts
What is the size of an angle when the sine is point6352?
39o26' (to the nearest minute) Explanation: Let the angle = θ sinθ = 0.6352 To find the angle of sinθ, you must apply sin-1 to sinθ. sin-1θ = 39o26'5.35"
What is another way of naming a obtuse angle?
A angle that is larger than 90 degrees
What is the Sum of interior and exterior angle at the vertex of a polygon?
The sum of the interior angles of a polygon with n sides is 180(n-2). Here is my explanation about it.http://math4allages.wordpress.com/2009/10/21/angle-sum/
How do you cut a 135 degree angle?
Cut a 45 degree angle "going the other way".
Why the relationship of sine and cosine holds for complementary angles.?
The answer depends on how sine and cosine are defined: as ratios in right angled triangles, as infinite series or some other way (there are many). The explanation is easiest for definitions based on right angled triangles. Since this browser does not allow graphics, the explanation will be simpler to follow if you just sketch a rough triangle. Suppose you have triangle ABC which is right angled at C. Then, since angle A + angle B + angle C = 180 degrees, angle A + angle B = 90 deg. That is, A and B are complementary angles. Now consider the ratio of the sides BC/AB. AB is the hypotenuse of the triangle. From the perspective of angle A, BC is the opposite side so the above ratio is sin(A). From the perspective of angle B, BC is the adjacent side so the above ratio is cos(B). Thus sin(A) = cos(B). Similarly, if you consider AC/AB you can show that cos(A) = sin(B).
