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If tanθ = 12, evaluate 2sinθ+3cosθ4cosθ+3sinθ - Mathematics and Statistics

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Question

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

Sum

Solution

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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Fundamental Identities
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Chapter 2: Trigonometry - 1 - EXERCISE 2.2 [Page 31]

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