Question

find sin square A + cos square A + cot square A​

Answer 1

Answer:

LHS=sin

2

Acot

2

A+cos

2

Atan

2

A

=sin

2

A×

sin

2

A

cos

2

A

+cos

2

A×

cos

2

A

sin

2

A

=cos

2

A+sin

2

A

=1

Answer 2

Answer:

$\sin ^{2} a + \cos {}^{2} a + \cot {}^{2} a \\ 1 + \cot {}^{2} a \\ \csc ^{2} a$