Question

find the value tan-1(-1)-2sin-1(-1/√2)+cos-1(√3/2)​

Answer 1

Answer:

Let tan-1(1) = x ⇒ tanx = 1 = tanπ/4 ⇒ x = π/4 where x ∈ [- π/2, π/2] Read more on Sarthaks.com - https://www.sarthaks.com/496522/find-the-values-of-tan-1-1-cos-1-1-2-sin-1-1-2