Question

sin(π/2 -cos⁻¹ 3/7)+ cos(⁻3π/2- sin⁻¹ 2/7)+cot(tan⁻¹ 7/6), Find value of it.

Answer 1

sin(π/2 -cos⁻¹ 3/7)+ cos(⁻3π/2- sin⁻¹2/7)+cot(tan⁻¹ 7/6) = cos(cos⁻¹3/7) + sin(sin⁻¹2/7) +cot(cot⁻¹6/7) = 3/7 + 2/7 + 6/7 =11/7