Question

(1+tan a+sec a) (1+cot a- cosec a)​

Answer 1

Answer:

Step-by-step explanation:

(1+tan a + sec A)(1+cot A- cosec A)

(sec A + sec A)(cosec A - cosec A)

(2sec A)(0)

Ans: 0

Answer 2

Answer:(1+tana+seca)(1+cota-coseca)

=(1+sina/cosa+1/cosa)(1+cosa/sina-1/Sina)

=(cosa+sina+1/cosa)(sina+cosa-1/sina)

=(sina+cosa) 2-(1)2

=1+2sinacosa-1/sinacosa

=sinacosa