Solving Trigonometic Equations
solve for x and give the answers as a equations : ( by radian)
1)cos(sinx)=1
<<<and thanks >>>
We know sin 2x = 2(sinx)(cosx)
so (sinx)(cos)=1/2(sin 2x)
So we can change your equation from
(sinx)(cosx)=1 to
1/2(sin 2x) = 1
(sin 2x) = 2
But the sine value of any angle is between -1 and 1, so your equation has no real solution.
Thanks