Q: $$ sin^2 5° + sin^2 10°+sin^2 15°+.....sin^2 85°+sin^2 90°$$ i – McqOptions

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1.	Q: $$ sin^2 5° + sin^2 10°+sin^2 15°+.....sin^2 85°+sin^2 90°$$ is equal to
A.	$$ {17\over2}$$
B.	$$ {19\over2}$$
C.	$$ {21\over2}$$
D.	$$ {18\over2}$$
Answer» C. $$ {21\over2}$$

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