If tan θ = 20/21 ,then find the value of (cosθ-sinθ)/(cosθ+sinθ)
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Step-by-step explanation:
tanθ =20/21
taking cosθ common
cosθ(1-sinθ/cosθ)/cosθ(1+sinθ/cosθ)
sinθ /cosθ= tanθ
1-20/21 / 1+20/21
1/41 ans
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