SOLUTION: please help me: sin^2(pi/6)+cos^2(pi/3): HERE ARE THE POSSIBLE ANSWERS: a)1 b)1/4 c)1/2

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Question 242746: please help me:
sin^2(pi/6)+cos^2(pi/3):
HERE ARE THE POSSIBLE ANSWERS:
a)1
b)1/4
c)1/2
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!



On the unit circle, the -coordinate is the and the -coordinate is the

Hence, and .

Since



you can just substitute:



You can do your own arithmetic.

John