Find the Exact Value cos(one hundred fifty degrees )

Find the Exact Value cos(150 degrees )
Use the reference angle by calculating the angle with equivalent triginometric values in the Initially quadrant. Should be rewritten the expression as a negative one since cosine is negative in the 2nd quadrant.
The exact value of is .
The result can be displayed in a variety of ways.
Exact Form:
Decimal Form:
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