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Question
मान ज्ञात कीजिए: `(4 cos^3 60^° + "cosec" 30°)/(tan^2 30°)`
Evaluate
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Solution
त्रिकोणमितीय मानों को प्रतिस्थापित करना:
cos 60∘ = `1/2`
cosec 30° = 2
tan 30° = `1/sqrt3`
अभिव्यक्ति:
= `(4(1/2)^3 + 2)/(1/sqrt3)^2`
= `(4(1/8) + 2)/(1/3)`
= `(1/2 + 2)/(1/3)`
= `(5/2)/(1/3)`
= `5/2 xx 3`
= `15/2 or 7.5`
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