Question

Prove that cot 2 A – 1

2

= −1
​

Answer 1

Answer:

We know that,

cotA=

perpendicular

base

=

p

b

1+cot

2

A=1+

p

2

b

2

=

p

2

b

2

+p

2

=

p

2

h

2

=cosec

2

A

Step-by-step explanation:

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Answer 2

Answer:

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