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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता ११ वी

If tanθ = 12, evaluate 2sinθ+3cosθ4cosθ+3sinθ

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प्रश्न

If tanθ = `1/2`, evaluate `(2sin theta + 3cos theta)/(4cos theta + 3sin theta)`

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उत्तर

Alternative Method :

Given: tan θ = `1/2`

∴ `(2sin theta + 3cos theta)/(4cos theta + 3sin theta) = ((2sin theta)/cos theta + 3)/(4 + (3sintheta)/cos theta)` ...[Dividing numerator and denominator by cos θ]

= `(2tan theta + 3)/(4 + 3 tan theta)`

= `(2(1/2) + 3)/(4 + 3(1/2))`

= `4/((11/2))`

= `8/11`

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पाठ 2: Trigonometry - 1 - EXERCISE 2.2 [पृष्ठ ३१]

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