Decide whether the equation is or is not an identity.tan  = -cot ?

A. Not an identity
B. Identity


Answer: B

Mathematics

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Find the area of the specified region.Inside the circle r = 5 and to the right of the line r =  sec ?

A. (4? - 3)
B. (2? + 3)
C. (2? - 3)
D. ?

Mathematics

Find the probability.A bag contains 19 balls numbered 1 through 19. What is the probability of selecting a ball that has an even number?

A. 9
B.
C.
D.

Mathematics

Simplify the expression. All exponents should be positive integers.-1

A.
B.
C.
D.

Mathematics

Write the prime factorization for the number.684

A. 2 ? 2 ? 3 ? 3 ? 19 B. 2 ? 2 ? 2 ? 3 ? 3 ? 19 C. 3 ? 3 ? 3 ? 3 ? 19 D. 2 ? 2 ? 2 ? 2 ? 19

Mathematics