Math, asked by anand2005gmailcom, 9 months ago

Prove the above question​

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Answered by Ïmpøstër
95

lhs =  \frac{sin \alpha  + tan \alpha }{cos \alpha }  \\  \\   = \frac{sin \alpha  +  \frac{sin \alpha }{cos \alpha } }{cos \alpha }  \\  \\  =  \frac{ \frac{sin \alpha (cos \alpha ) + sin \alpha }{cos \alpha } }{cos \alpha }  \\  \\  =  \frac{sin \alpha (cos \alpha  + 1)}{ {cos}^{2}  \alpha }   \\  \\  =  \frac{tan \alpha (cos \alpha  + 1)}{cos \alpha }  \\  \\  =  \frac{tan \alpha. cos \alpha  + tan \alpha }{cos \alpha }  \\  \\  =  \frac{tan \alpha .cos \alpha }{cos \alpha }  +  \frac{tan \alpha }{cos \alpha }  \\  \\  = tan \alpha  \:  +  \frac{tan \alpha }{cos \alpha }  \\  \\  = tan \alpha (1 +  \frac{1}{cos \alpha } ) \\  \\  = tan \alpha (1 + sec \alpha ) = rhs

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Answered by chavvaanuradha0
2

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hope it helps u

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