Question

P.T since
+
1+ losce
= 2 cosecce
1 + cosce
Since​

Answer 1

Answer:(1 + tan a + sec a )(1+ cot a - cosec a)

= 1 + cot a - cosec a  + tan a + 1 - sec a + sec a + cosec a - sec a.cosec a

= 2 + cot a + tan a - sec a . cosec a

= 2 + (cos a)/(sin a) + (sin a)/(cos a) - sec a . cosec a

= 2 + (cos² a + sin² a)/(sin a. cos a) - sec a . cosec a

= 2 + sec a . cosec a - sec a . cosec a

= 2 proved