For an acute angle ,

MATHEMATICS · Single correct · CBSE · Mathematics · Introduction to Trigonometry · Introduction to Trigonometry

Problem

For an acute angle θ\theta, cos⁡θ≈0.707\cos\theta\approx0.707. Which of the following is the closest measure of θ\theta? (a) 30∘30^{\circ} (b) 45∘45^{\circ} (c) 40∘40^{\circ} (d) 60∘60^{\circ}

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