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
Algebra.Com
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) (Show Source): You can put this solution on YOUR website!
On the unit circle, the 
-coordinate is the 
and the 
-coordinate is the 
Hence, \ =\ \frac{1}{2})
and \ =\ \frac{1}{2})
.
Since
\ =\ \left(sin(x)\right)^2)
you can just substitute:
^2\ +\ \left(\frac{1}{2}\right)^2)
You can do your own arithmetic.
John
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