Find the exact value of the expression.sin 105°

A. - 
B. - 
C.  
D.  

Answer: C

Mathematics

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Use identities to find the exact value of the trigonometric function.Find cot ? if sec ? =  and ? is in quadrant IV.

A. - 
B. -6
C. -
D. 6

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Convert to percent.

A. 1%
B. 58%
C. 5%
D. 17%

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Perform the indicated operations and simplify the result. Leave the answer in factored form. - 

A.
B. 0
C.
D.

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Find the perimeter.

A. 40 yd B. 200 yd C. 59 yd D. 60 yd

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Mathematics