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Solve 2(sin2 90° − 2 sin 90° cos 90° + cos2 90°)
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5 votes
Solve 2(sin2 90° − 2 sin 90° cos 90° + cos2 90°)

User Foram Kantaria
by
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1 Answer

7 votes
sin 90 = 1 and cos 90 = o

So we have

2(1^2 - 2*1*0 + 0^2) = 2(1 - 0 - 0) = 2
User Jagadish
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