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13-97.
  1. Solve for x in degrees. Homework Help ✎

    1. 2sin(x) = 1

    2. cos2(x) + 4cos(x) + 4 = 0

Draw a 30°-60°-90° triangle and label the sides.

In the first quadrant, the side opposite the 30° is one-half.

In the second quadrant, the angle with sine equal to one-half is 180° − 30° or 150°.

x = 30° + 360°n or x = 150° + 360°n

Factor the equation and simplify.

There is no solution.