Question

(1) (sec A + tan A) (1 - sin A) = cos A​

Answer 1

(1/cos a +sin/cos a )(1-sin a)

(1+sin a/ cos a)(1-sin a)

$1 - \sin( {a}^{2} ) \div \cos(a)$

$1 - \sin( {a}^{2} ) ) = \cos( {?}^{2} )$

$\cos( {a}^{2} ) \div \cos(a)$

= Cos A// HENCE PROVED

Answer 2

Answer:

Step-by-step explanation: