# Trigonometry Finding Exact Values

1. Find the exact value of the following expressions given that sec(x) = 3/2, csc(y) = 3 and x and y are in quadrant I.

a) cost(x - y)

b) sin(2y)

c) tan(y/2)

2. Write the following expressions in terms of sin only:

a) sin(x) + cos(x)

b) 3sin(pi*x) + 3*sqrt(3)*cos(pi*x)

https://brainmass.com/math/trigonometry/trigonometry-finding-exact-values-508918

#### Solution Summary

This solution shows how to find the exact values of trigonometric functions.

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