1.

If 0 < theta < 90, then show that sintheta + costheta is greater than 1.

Answer»

If THETA is a positive ACUTE angle prove that sin theta + cos theta is greater than 1. 2 ... then, sin \theta + cos \theta = √2sin( \theta +45°). here , 0° < \theta < 90°. so, sin( \theta +45°) > sin45° = 1 ...



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