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The product of sec 30° and cos 60° is _____(a) 0(b) 2(c) 1(d) \( \frac {1}{\sqrt 3}\)This question was addressed to me in a national level competition.My doubt stems from Trigonometric Ratios ofSpecific Angles topic in chapter Trigonometry of Mathematics – Class 10

Answer»

Correct option is (d) \( \frac {1}{\SQRT 3}\)

The explanation: (SEC 30°) (cos 60°) = \(( \frac {2}{\sqrt 3}) ( \frac {1}{2} )\)

= \( \frac {1}{\sqrt 3}\)



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