Find the exact value of the function. Rationalize the denominator if necessary.
-cos (-630°)
A) 0
B) $\frac { \sqrt { 3 } } { 2 }$
C) 1
D) Undefined

Name: Find the exact value of the function. Rationalize the denominator if necessary. -cos (-630°) A) 0 B) $\frac { \sqrt { 3 } } { 2 }$ C) 1 D) Undefined
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Question

Quizplus · Accepted Answer

cos (-630°) = cos (-360° - 270°) = cos (-270°) = 0

Find the Exact Value of the Function 32\frac { \sqrt { 3 } } { 2 }23​​

Find the Exact Value of the Function $\frac { \sqrt { 3 } } { 2 }$