1. 1.
2. Ifcos()=-.98,and,whatissin()?(approximatetofourdecimalplaces)

A 0.0396 B -0.0396

C 0.1990

D -0.1990

E none of these

2.

Find cos B and cot B of this triangle. The measurements of the triangle are: AB -123 BC-27 CA - 120 A cos B = 40/41; cot B = 40/9 B cos B = 9/41; cot B = 9/40 C cos B = 41/40; cot B = 9/40 D cos B = 9/40; cot B = 40/9 E none of these

3.

If cos = , then find sec . (exact value)

4.

A square playground has a white line drawn through its diagonal. This creates two triangles whose angle measures are 45, 45, and 90. If the sides of the playground are 55 feet, use trigonometric functions to find the length, x, of the diagonal. Round answer to tenths.