
The Angle formed by an arc on the centre of the circle is double the angle made by the same arc on the circumference of the circle.
So,

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Step-by-step explanation:
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Get rid of cos2x by dividing both the values. So Sin2x/cos2x +3cos2x/cos2x.
Tan2x = 3
2x = -71.5 so x is -35.6
Use the quadrant method and add 360 twho the two values tou get.
Answer:
she earns $375
Step-by-step explanation:
well you would do 75 x 5 then you get 375