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find the value of cos^2 33-cos^2 57/sin 21-cos21=? a.1/2 b.-1/√2

find the value of cos^2 33-cos^2 57/sin 21-cos21=?
a.1/2
b.-1/√2

Grade:11

1 Answers

Deepak Kumar Shringi
askIITians Faculty 4404 Points
5 years ago
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