Menu Close

if-sin10-0-x-then-sin70-0-




Question Number 101589 by student work last updated on 03/Jul/20
if sin10^0 =x          then   sin70^0 =?
$$\mathrm{if}\:\mathrm{sin10}^{\mathrm{0}} =\mathrm{x}\:\:\:\:\:\:\:\:\:\:\mathrm{then}\:\:\:\mathrm{sin70}^{\mathrm{0}} =? \\ $$
Answered by Dwaipayan Shikari last updated on 03/Jul/20
sin70°=cos20°=1−2sin^2 10°=1−2x^2
$${sin}\mathrm{70}°={cos}\mathrm{20}°=\mathrm{1}−\mathrm{2}{sin}^{\mathrm{2}} \mathrm{10}°=\mathrm{1}−\mathrm{2}{x}^{\mathrm{2}} \\ $$

Leave a Reply

Your email address will not be published. Required fields are marked *