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Rainbow Rainbow

Class 10th
Maths
2 years ago
Content Issue Not Relevent Obscene Threatening Wrong Information Other

प्र० 5. यदि sec 4A = cosec(A – 20°), जहाँ 4A एक न्यूनकोण है, तो A का मान ज्ञात कीजिए|

1 Answer
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Dileep Vishwakarma

2 years ago

हल: sec 4A = cosec(A – 20°) ⇒ cosec (90° – 4A) = cosec(A – 20°) [sec q = (90°- q)] तुलना करने पर ⇒ 90° – 4A = A – 20° ⇒ 90° + 20° = A + 4A ⇒ 5A = 110° ⇒ A = 22°

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