Use identities to find the exact value of the trigonometric function.Find sec ? if cos ? =  and 0 < ? < .

A. -2
B. 2
C.
D.


Answer: B

Mathematics

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Use the imaginary unit to write the expression.

A. 2
B. -2i
C. 2i
D. -2

Mathematics

Evaluate the integral.

A. -cos (3x - 2) + C
B. -  cos (3x - 2) + C
C. 3 cos (3x - 2) + C
D.  cos (3x - 2) + C

Mathematics

Solve the equation. +  = - 

A.
B.
C.
D.

Mathematics

Apply the quotient rule for exponents, if applicable, and write the result using only positive exponents. Assume all variables represent nonzero numbers.

A.  
B. 710
C.  
D. 74

Mathematics