Solve for A for the given equation cos 2A = 1 – cos 2A
A). 45, 125, 225, 315 degrees
B). 45, 125, 225, 335 degrees
C). 45, 135, 225, 315 degrees
D). 45, 150, 220, 315 degrees
Solve for x in the equation: arc tan (x + 1) + arc tan (x – 1) = arc tan (12)
A). 1.20
B). 1.25
C). 1.34
D). 1.5
Solve for x in the given equation: Arc tan (2x) + arc tan (x) = π/4
A). 0.149
B). 0.281
C). 0.316
D). 0.421
Evaluate arc cot [2cos (arc sin 0.5)]
A). 30°
B). 45°
C). 60°
D). 90°
Arc tan [2 cos (arc sin [(3^(1/2))/2]) / 2]) is equal to
A). /2
B). /3
C). /4
D). /16