# Trigonometry Quadrant Functions

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1. If cos Î¸ = 4/5 and Î¸ is in quadrant IV, find the values of the trigonometric functions of Î¸.

2. Suppose Î¸ is in the interval (90Âº, 180Âº). Find the sign of each function value.

(a) cos Î¸/2

(b) cot(Î¸ - 180Âº)

2. Use the reciprocal, quotient, and Pythagorean identities to give three expressions that complete the following statement:

cot Î¸ = _____________.

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#### Solution Summary

The expert examines trigonometric quadrant functions.

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