M= 5/13
6m= 6(5/13)
6m = 30/13
Equilateral triangle means each angle equals 60 degrees.
60 = 7x - 3
63 = 7x
x = 9
Answer:
C & D
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The second-quadrant angle is
... arctan(3.3/-6.0) ≈ 151°
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Your calculator will tell you it is about -28.81°. You need to add 180° to that 4th-quadrant angle to put it in the 2nd quadrant.