Math, asked by cielgrau04, 16 days ago

Check the following identity
Verifica la siguiente identidad

\frac{1-sen A}{cos A} = \frac{cos A}{1+sen A}

Answers

Answered by diwanamrmznu
4

 \frac{(1 -  \sin(a))(1 +  \sin(a)  )}{ \cos(a)(1 +  \sin(a) ) } \\  \\  \\    \frac{1 -  \sin {}^{2} (a) }{ \cos(a) (1 +  \sin(a) }  \\  \\  \\  \frac{ \cos{}^{ \cancel2}a }{\cancel{cos \:  a }(1 +  \sin(a) }  \\  \\  \\  \frac{ \cos(a) }{1 +  \sin(a) }

proved

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