Question

Find the values of the six trigonometric functions of θ.

1. Function value: sin θ = 0
Constraint: π/2 ≤ θ ≤ 3π/2

2. Function value: tan θ is undefined
Constraint: π ≤ θ ≤ 2π

Answer 1

http://mathmistakes.info/facts/TrigFacts/learn/vals/sum.html



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Answer 2

Then its just whether or not you understand what the other trig values are and how to calculate them at spots on the unit circle.