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What is the exact value of sin 90°?
1
What is the exact value of cos 180°?
-1
What is the exact value of tan 270°?
Undefined
What is the value of tan 150°?
-√3/3
What is the value of cos 70°?
0.3420 (exact value not commonly used) or √(1-sin²70°) depending on method.
What is the value of sin 240°?
-√3/2
What is the value of cos 315°?
√2/2
What is the value of sin 200°?
-√3/2
What is the value of tan 115°?
-√3
Find θ if cos θ = √3/2.
θ = 30° or 330°
Find θ if tan θ = √3/3.
θ = 30° or 210°
Find θ if sin θ = -√3/2.
θ = 240° or 300°
Find θ if cos θ = -1.
θ = 180°