cos2x + √3sin2x = 2 ????????????
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Let y= sin(2x). Square both sides to get a quadratic equation for y.
Isn't cos2x = 1 - 2sin^2 x ?? So why apply the square root ? And I think you meant =2 instead of +2 in the first line.
Yes it is. But that's not what HallsOfIvy did. He applied the Pythagorean Identity. Notice how what he did is still in terms of sin(2x), not sin(x)?
Hello, OmarAj96! Divide by 2: . Then we have: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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