Use a sum or difference identity to find the exact value.tan 345°

A. -  + 2
B. -  - 2
C.  - 2
D.  + 2

Answer: C

Mathematics

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Find the angle between u and v in radians.u = 5i + 5j + 10k, v = 5i + 10j + 6k

A. 1.12 B. 0.52 C. 1.50 D. 1.05

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Mathematics

Write the following as an algebraic expression. Simplify if possible.Subtract 9x + 6 from 3x - 8.

A. -6x - 14 B. -6x + 2 C. 12x - 2 D. 6x + 14

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Mathematics

Evaluate the integral by making a substitution and then using a table of integrals.  

A. 4 sin-1 -   + C
B. 4 sin-1 -   + C
C.   - 2 ln  + C
D. 4 sin-1 + x  + C

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Mathematics

Find the reciprocal.

A.
B. 13
C.
D.

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Mathematics