Inverse Trigonometric Functions

Matching exercise

    
Match the items on the right to the items on the left.
principal value of cos⁻¹(√3/2)
tan⁻¹(-1)+cos⁻¹(1/2)+sin⁻¹(-1/2)
cos⁻¹(cos(-π/3))
tan⁻¹(tan(3π/5))
π/6
-π/12
π/3
-2π/5