Q.

If α and β are complementary angles then cos2(900−α)+cos2(900−β)=

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a

0

b

1

c

−1

d

2

answer is B.

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Detailed Solution

cos2(900−α)+cos2(900−β) =sin2α+sin2β=1          (∵α+β=π2)
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Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation
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If α and β are complementary angles then cos2(900−α)+cos2(900−β)=