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FinnZ [79.3K]
3 years ago
14

Which expression can be used to determine the reference angle for an angle, x, measuring 150°?

Mathematics
2 answers:
Kay [80]3 years ago
4 0

Answer:

30°


Step-by-step explanation:

<u>Angles and Quadrants:</u>

  • 0° to 90°     --    Quadrant 1
  • 90° to 180°   --  Quadrant 2
  • 180° to 270° --  Quadrant 3
  • 270° to 360°  -- Quadrant 4

<u>Formula for Reference Angle in each Quadrant:</u>

<em>\theta  is the angle given</em>

  • Quadrant 1  -- Reference Angle =  \theta
  • Quadrant 2 -- Reference Angle =  180-\theta
  • Quadrant 3 -- Reference Angle =  \theta - 180
  • Quadrant 4 -- Refence Angle =  360-\theta

Angle given is 150°, which according to first table, falls in Quadrant 2.

According to second table, the reference angle is found by subtracting 150° from 180°.

Reference Angle = 180° - 150° = 30°

Savatey [412]3 years ago
4 0
             To find the reference angle measuring x for angle in Quadrant II the formula is:
                   180° - x = 180° - 150° = 30°
              Answer: the reference angle is 30° .

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