Question

2
1-tan A
1+tan' A
1 + cot? A
tan? A
1-cot A
Prove that​

Answer 1

Answer:

=tanA1−cotA+cotA1−tanA

=tanA1−1tanA+1tanA1−tanA

=tan2AtanA−1−1tanAtanA−1

=1tanA−1tan3A–1tanA

=1tanA−1(tanA−1)tan2A+tanA+1tanA

=tan2A+tanA+1tanA

=tanA+1+1tanA

=tanA+1+cotA