Just want to make sure I am doing this right:
1. If cos theta = 2/3 , state all possible angles.
cos theta = 2/3
cos-1 = (-2/3) = 131.8°
since cos is positive, Quadrant 4 (because that is where cos is positive)
Q4 = 360° - 131.8° = 228.2°
2. If If tan theta = -4/3 , state all possible angles.
tan theta = -4/3
tan-1 = (4/3) = 53.1°
since tan is negative, Quadrant 4 or 2 (because that is where tan is negative)
Q4 = 360° - 53.1° = 306.9°
Q2 = 180° - 53.1° = 126.9°
1. If cos theta = 2/3 , state all possible angles.
cos theta = 2/3
cos-1 = (-2/3) = 131.8°
since cos is positive, Quadrant 4 (because that is where cos is positive)
Q4 = 360° - 131.8° = 228.2°
2. If If tan theta = -4/3 , state all possible angles.
tan theta = -4/3
tan-1 = (4/3) = 53.1°
since tan is negative, Quadrant 4 or 2 (because that is where tan is negative)
Q4 = 360° - 53.1° = 306.9°
Q2 = 180° - 53.1° = 126.9°
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