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Find the angles on the unit circle
MATHEMATICS · Multi-part · CBSE · Mathematics · Trigonometric Functions · Trigonometric Functions
Problem Find the angles θ \theta θ on the unit circle, with 0 ≤ θ ≤ 2 π 0\le\theta\le2\pi 0 ≤ θ ≤ 2 π , such that:
(a) cos θ = − 1 4 \cos\theta=-\frac{1}{4} cos θ = − 4 1
(b) sin θ = 0 \sin\theta=0 sin θ = 0
(c) tan θ = − 3.1 \tan\theta=-3.1 tan θ = − 3.1
(d) sin θ = − 0.421 \sin\theta=-0.421 sin θ = − 0.421
(e) tan θ = 1.2 \tan\theta=1.2 tan θ = 1.2
(f) cos θ = 0.7816 \cos\theta=0.7816 cos θ = 0.7816
(g) sin θ = 1 11 \sin\theta=\frac{1}{11} sin θ = 11 1
(h) cos θ = − 1 3 \cos\theta=-\frac{1}{\sqrt{3}} cos θ = − 3 1
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