Trigonometric Equations

Solve sinx – 0.5 = 0 such that -360° < x < 360°.

Solution: 30°, 150°, -330°, -210°

Basic angle, a = 30°

sinx = 1/2

x = angle 1 / 30° , angle 2/ (180° – 30°)

x =   30°, 150° 

     -360°  -360 °

x = -330°, -210°

x = 30°, 150°, -330°, -210°

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