Posted by Amy on Wednesday, February 16, 2011 at 10:51pm.
sin(π) + cos 5π
how to solve without a calculator.
Please write steps and explain
thank you

trig  Amy, Wednesday, February 16, 2011 at 10:59pm
answer is 1

trig  Anonymous, Sunday, October 16, 2016 at 1:38am
Answer is 1
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