Solve the equation for θ if . Do not use a calculator.
2cos θ + 1 = 0

A)60°; 120°
B)45°; 315°
C)120°; 240°
D)60°; 300°
E)45°; 45°

Name: Solve the equation for θ if . Do not use a calculator. 2cos θ + 1 = 0 A)60°; 120° B)45°; 315° C)120°; 240° D)60°; 300° E)45°; 45°
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Question

Solve the equation for θ  if  . Do not use a calculator.
2cos  θ + 1 = 0
​
A)60°; 120° 
B)45°; 315° 
C)120°; 240° 
D)60°; 300° 
E)45°; 45°

Quizplus · Accepted Answer

The Answer of Solve the equation for θ  if  . Do not use a calculator.
2cos  θ + 1 = 0
​
A)60°; 120° 
B)45°; 315° 
C)120°; 240° 
D)60°; 300° 
E)45°; 45°

Solve the Equation for θ If