Let’s see an example:
11.
In the triangle above, sin x = 0.8 and cos x = 0.6. What is the area of the triangle?
A) 0.48
B) 4.8
C) 24
D) 48Here’s How to Crack It
Use the definitions of sine and cosine to find the two legs of the triangle. Sine is , so if sin x =
0.8, then . Multiply both sides by 10 and you find the side opposite the angle with measure x° is