Problem 1.1: Calculate sin(θ), cos(θ), and tan(θ) if sin(2θ) = 2 sin(30^o)cos(30^o). [Solution]

Problem 1.2: Calculate cos(15^o) using the fact that cos(30^o) =

. [Solution]

Problem 1.3: θ is in the first quadrant, and tan(θ) =

. Find the sine, cosine, and tangent of 2θ. [Solution]

Problem 1.4: θ is in the third quadrant, and sin(θ) = -

. Find the sine, cosine, and tangent of

(θ). [Solution]