Find the reference angle for the given angle.-150°

A. -60°
B. -30°
C. 60°
D. 30°


Answer: D

Mathematics

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Find the derivative of y with respect to the appropriate variable.y = csch-1 ?

A.
B.  
C.  
D.  

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Find the indicated derivative.Find y " if y = 5x sin x.

A. y " = - 5x sin x B. y " = 10 cos x - 5x sin x C. y " = 5 cos x - 10x sin x D. y " = - 10 cos x + 5x sin x

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Find the following limit.

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Solve the problem.If f(?) = cot ? and f(a) = -3, find the exact value of f(a) + f(a + ?) + f(a + 3?).

A. -9 B. -3 C. -9 + 4? D. undefined

Mathematics