Originally Posted by

**Alan306090** I accidently posted this in the Pre-Calc section, if possible can someone delete that?

How do I solve these

Cos^2x + 2sinxcosx - sin^2 x = 0 [0, 360)

sin(x +1) = cos x [0, 360)

Cos 4X - Cos 2X but range is [-180, 180]

And finally

Logan has a garden in the shape of a sector of a circle; outer rim of garden is 25 ft long and central angle along of sector is 50 degrees, she wants to add a 3 ft wide walk to the outer rim, how many sq ft of paving does she need to build it?