Question

Show that 1-tan^2A/cot^2A-1=tan^2A

Answer 1

Step-by-step explanation:

ANSWER

Simplifying the LHS of

cot

2

A−1

1−tan

2

A

=tan

2

A.

cot

2

A−1

1−tan

2

A

=

sin

2

A

cos

2

A

−1

1−

cos

2

A

sin

2

A

=

sin

2

A

cos

2

A−sin

2

A

cos

2

A

cos

2

A−sin

2

A

=

cos

2

A

sin

2

A

=tan

2

A

=RHS