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Question
State for any acute angle θ whether cos θ increases or decreases as θ increases.
Options
Increases
Decreases
MCQ
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Solution
Increases
Explanation:
For acute angles, remember what cosine means: base over hypotenuse. If we increase the angle, then the hypotenuse side gets larger. That means "base/hypotenuse" gets smaller or decreases.
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Trigonometric Equation Problem and Solution
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Chapter 21: Trigonometrical Ratios [Sine, Consine, Tangent of an Angle and their Reciprocals] - EXERCISE 21 (C) [Page 323]
