5. 2 cos A tan A csc A= 2

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 13E
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please answer 5-7. thankyou!

What's More
Practice Time!
A Prove each of the following identities.
5. 2 cos A tan A csc A=2
%3D
B. Give what it is being asked.
5 TC
6. Find the exact value of cos
12.
7. Find the value of; (tan 10°) (tan 15°) (tan 20°) ... (tan 80°)
Transcribed Image Text:What's More Practice Time! A Prove each of the following identities. 5. 2 cos A tan A csc A=2 %3D B. Give what it is being asked. 5 TC 6. Find the exact value of cos 12. 7. Find the value of; (tan 10°) (tan 15°) (tan 20°) ... (tan 80°)
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