Question

If x=sin ^2θ, y=2cos^2θ+1, then the value of 2x+y is:

please give me right answer

Answer 1

$\sf \Large Solution!!$

$\sf \large To\;find:$

$\sf \to Value\;of\;2x+y$

$\sf \large Given:$

$\sf \to x=\sin^{2}\theta$

$\sf \to y=2\cos^{2}\theta +1$

$\sf \large So,$

$\sf \to 2(\sin^{2}\theta)+2\cos^{2}\theta +1$

$\sf \to 2\sin^{2}\theta +2\cos^{2}\theta +1$

$\sf \to 2(\sin^{2}\theta +\cos^{2}\theta)+1\quad [\sin^{2}\theta +\cos^{2}\theta=1]$

$\sf \to 2(1)+1$

$\sf \to 2+1=3$

$\sf \boxed{\bigstar Value\;of\;2x+y=3}$

Answer 2

Answer:

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