Find the principal value of cos
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Step-by-step explanation:
cos −1 (−1/2)=π−cos −1
(1/2) =π− 3
π = 32π
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Answer:
principal value of cos is 0
Step-by-step explanation:
The solution in which the absolute value of the angle is the least is called principal solution. For example the value of cos o° is 1, the value of cos 2π, 4π ,.. are also 1. But the 0 is known as principal value.
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