tanθ = 3/4 হলে (sinθ − cosθ)/(sinθ + cosθ) এর মান কত?

ব্যাখ্যা

tanθ = 3/4 ∴ sinθ = 3/5, cosθ = 4/5; (sinθ − cosθ)/(sinθ + cosθ) = (3/5 − 4/5)/(3/5 + 4/5) = (−1/5)/(7/5) = −1/7