(sinθ + cosθ)/(sinθ - cosθ) = 7 হলে, tanθ = কত?

A

3/4

B

- 3/4


C

4/3

D

- 4/3

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সমাধান: 

দেওয়া আছে, 

sinθ + cosθ/sinθ - cosθ = 7 

বা, (sinθ + cosθ + sinθ - cosθ)/(sinθ + cosθ - sinθ + cosθ) = (7 + 1)/(7 - 1) 

বা, 2sinθ/2cosθ = 8/6 

বা, sinθ/cosθ = 4/3

∴ tanθ = 4/3

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Updated: 1 month ago

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