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**badams6161** Hello everyone, I'm having a bit of trouble figuring out how to solve these two problems

1. Solve for x if 0<=x<2pi: 4sin^{2}x-cosx=5

2. A plane is flying with an airspeed of 244 miles per hour with heading 272.7 degrees. The wind currents are running at a constant 45.7 milers per hour in the direction 262.6 degrees the ground speed and true course of the plane.

If anyone is able to explain step by step what you do that would be best because I want to know what I'm doing wrong. I can't figure either of these out. Thanks in advance!