Question

Evaluate the following expressions without using a calculator. Give the exact value.
a) sin(30°)
b) cos(π/3)
c) tan(π/6)
d) sin⁻¹(1/2)
Options for each:
a) 1/2, √3/2, 1/√3, π/6
b) 1/2, √3/2, 1/√3, π/6
c) 1/2, √3/2, 1/√3, π/6
d) 1/2, √3/2, 1/√3, π/6