**Write exact answer, no calculator, no rounding. **You must rationalize the denominator if it is irrational. 1. Find the exact value of the trigonometric function at the given real number. CSC(-2π/3)= sec(-5π/6)= cos(-19π/4)=
**Write exact answer, no calculator, no rounding. **You must rationalize the denominator if it is irrational. 1. Find the exact value of the trigonometric function at the given real number. CSC(-2π/3)= sec(-5π/6)= cos(-19π/4)=
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 72E
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