Question

evaulate:( 1 - sin theta ):1 + sin theta) ( 1 + tansquare theta)​

Answer 1

Answer:

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Answer 2

$\red{\large {\underline{ \underline{ \star \: {Given}}}}}$

$Q.\:(1 + {\tan }^{2} \phi)(1 - \sin \phi)(1 + \sin \phi)$

$\red{\large {\underline{ \underline{ \star \: {Solution}}}}}$

$Q.\:(1 + {\tan }^{2} \phi)(1 - \sin \phi)(1 + \sin \phi) \\ \\ \implies( {\sec }^{2} \phi)( {1}^{2} - { \sin }^{2} \phi). \\ \\ \implies (\frac{1}{ {\cos }^{2} \phi } )({ \cos }^{2} \phi) \\ \\ \implies \cancel \frac{{ \cos }^{2} \phi }{ { \cos }^{2} \phi} . \\ \\ \implies 1.$