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Find the Exact Value of the Real Number Y y=cos1(22)y = \cos ^ { - 1 } \left( \frac { \sqrt { 2 } } { 2 } \right)

Question 14

Multiple Choice

Find the exact value of the real number y.
- y=cos1(22) y = \cos ^ { - 1 } \left( \frac { \sqrt { 2 } } { 2 } \right)


A) 7π4\frac { 7 \pi } { 4 }
B) π6\frac { \pi } { 6 }
C) 11π6\frac { 11 \pi } { 6 }
D) π4\frac { \pi } { 4 }

Correct Answer:

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