Find the exact value of the expression without using a calculator.cos  cos  - sin  sin 

A.
B. 1
C.
D.

Answer: C

Mathematics

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Find a number such that 14 more than one-fourths of the number equals five-sixths of the number.

A. 12 B. 22 C. 24 D. 26 E. 48

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Decide whether or not the given equation is an identity. = tan y

A. Yes B. No

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

A.
B.
C. - 
D. - 

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Given , find:

?f/?y

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Mathematics