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Which of the following is equal to sin xsec x?

(A) tan x

(B) cot x

(C) cos xtan x

(D) cos x csc x

(E) cot xcsc x

The Correct Answer
Explanation

When , 16r4 - s4 =?

(A)0 (B) 16 (C) 32 (D) -16 (E) -32

Correct Answer: A

The graph of y = f(x) is shown in the standard (x,y) coordinate plane below with points V, W, X, Y, and Z labeled.

 

The y-intercept of the graph of y = f(x) is located at which of the following points?

(A) V (B) W (C) X (D) Y (E) Z

Correct Answer: E

A photocopy machine enlarges a small triangle to produce a larger, similar triangle, as shown below. If the lengths of the sides, in inches, are as marked on the figure, and the triangles are similarly oriented, what is the value of x in inches? image

(A)7image (B) 9 (C) 9image (D) 9image (E) 11

Correct Answer: D

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