C-09-Q045mediumsingle_mcqcotθ=cosθ?\cot\theta = \dfrac{\cos\theta}{?}cotθ=?cosθasinθ\sin\thetasinθbcosθ\cos\thetacosθctanθ\tan\thetatanθdsecθ\sec\thetasecθব্যাখ্যাSince cotθ=cosθsinθ\cot\theta = \dfrac{\cos\theta}{\sin\theta}cotθ=sinθcosθ by definition (the reciprocal of tanθ=sinθcosθ\tan\theta = \frac{\sin\theta}{\cos\theta}tanθ=cosθsinθ), the denominator must be sinθ\sin\thetasinθ.