differentiation of sin 2x /tan^2x
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Step-by-step explanation:
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(d/dx) (fg)= fg’ + gf’
First of all y = cos ^2 x = ( cos x ) ^2
Hence , y ' = 2 cos x ⋅ ( cos x ) ' = 2 cos x ⋅ ( − sin x ) = − 2 cos x ⋅ sin x = − sin 2 x
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