# Why values of sine and cosine theta remains between 1 and -1???? [closed]

Why value of sine and cosine theta remain between 1 and -1 from angle 0° to 360°?? Is it any specific reason for it... i need answer

## closed as off-topic by Henrik, Parcly Taxel, Arnaldo, Davide Giraudo, Yujie ZhaMay 12 '17 at 13:44

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• The $\sin, \cos$ of an angle are the ratios of the legs of a right triangle to the hypotenuse. The legs can not be longer than the hypotenuse. – lulu May 12 '17 at 11:24
• I would say that lulu's answer pretty much sums it up. – Matti P. May 12 '17 at 11:27
• I cannot understand your answer .. please explain it – WaQar ALi May 12 '17 at 11:29