Trigonometry (11th Edition)
Trigonometry (11th Edition)
11th Edition
ISBN: 9780134217437
Author: Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher: PEARSON
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need help with gr 11 trig hw.

I need help explaining each of the 10 steps in the image (1 step is 1=1)

Could someone walk me through each step, and explain what's being done at each step to get the trig identity and why it makes sense. Could u also provide the strategies and basic equation used. Need clarification. Thx

 

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