Learning Objectives

Problem 1 of 3

Prove the identity:

Solution

Problem 2 of 3

If sin θ = (4/5) and sec θ < 0 find the exact value of:

(a) tan 2θ

(b) sin 2θ

Solution

Problem 3 of 3

Find the exact value of:

(a) cos (11π/12)

(b) sec (11π/12)

Solution