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More Trigonometric Identities
  
 
Problems
Problem 1.1: Calculate sin(θ), cos(θ), and tan(θ) if sin(2θ) = 2 sin(30o)cos(30o). [Solution]
Problem 1.2: Calculate cos(15o) using the fact that cos(30o) =
. [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]
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