trigonometry, Mathematics

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show that, sin 90 degree = 2 cos 45 degree sin 45 degree

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Strategic , Hi need a help for marketing strategic assignment Could you ab...

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Show that cos12+cos60+cos84=cos24+cos48 , L.H.S. =cos 12+cos 60+cos 84 =c...

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Show that the angles subtended at the centre , A circle touches the sides o...

A circle touches the sides of a quadrilateral ABCD at P, Q, R and S respectively. Show that the angles subtended at the centre by a pair of opposite sides are supplementary.

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