Contact us
Choose a category below so we can get back to you as quickly as possible.
2sin^2x+cos^2y=1 cos^2y=1-2sin^2x≥0 ∴0≤1-2sin^2x≤1 ∴0≤sin^2x≤1/2 ∴sin^2x+cos^2y=sin^2x+1-2sin^2x=1-sin^2x ∵0≤sin^2x≤1/2 ∴1/2≤1-sin^2x≤1 ∴1/2≤sin^2x+cos^2y≤1
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.