Question
Download Solution PDFFind the value of cos 47° sec 133° + sin 44° cosec 136°.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFFormula used:
sec (180° - θ) = - sec θ
cosec (180° - θ) = cosec θ
cos θ × sec θ = 1 ; sin θ × cosec θ = 1
Calculation:
cos 47° sec 133° + sin 44° cosec 136°
⇒ cos 47° × sec (180° - 47) + sin 44° cosec (180° - 44°)
⇒ cos 47° × (- sec 47°) + sin 44° × (cosec 44°)
⇒ -1 + 1 = 0
∴ The correct answer is 0.
Last updated on Jun 13, 2025
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