Evaluate the cosine of the angle without using a calculator.
A) $\frac { \sqrt { 2 } } { 2 }$
B) $- \frac { \sqrt { 2 } } { 2 }$
C) $\frac { \sqrt { 3 } } { 2 }$
D) $\frac { 1 } { 2 }$
E) 0

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The Answer of Evaluate the cosine of the angle without using a calculator.
A) $\frac { \sqrt { 2 } } { 2 }$
B) $- \frac { \sqrt { 2 } } { 2 }$
C) $\frac { \sqrt { 3 } } { 2 }$
D) $\frac { 1 } { 2 }$
E) 0

Evaluate the Cosine of the Angle Without Using a Calculator 22\frac { \sqrt { 2 } } { 2 }22​​

Evaluate the Cosine of the Angle Without Using a Calculator $\frac { \sqrt { 2 } } { 2 }$