Question

The value of cot(cos^(-1)a+cos(-1)b) + cot(sin^(-1)a+sin^(-1)b is equal to

Answer 1

Answer:

I hope it will help you

Step-by-step explanation:

cos

−1

[cos(2⋅cot

−1

(

2

−1)}]

=cos

−1

[cos{2×67.5}]

=cos

−1

[cos135

∘

]

=135

∘

=

4

3π