Rewrite the expression in terms of the given function or functions.(sec x + csc x) (sin x + cos x) - 2 - tan x; cot x
A. 2 + cot x
B. 0
C. cot x
D. 2cot x
Answer: C
Mathematics
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What is the percent concentration of a solution that contains 25 g of glucose in 500 mL of water?
A. 25% B. 2.5% C. 50% D. 5%
Mathematics
Solve the problem.A radio telescope has a parabolic surface. If it is 1 m deep and 
wide, how far is the focus from the vertex?A = 16 mB = 1 m
A. 16 m B. 4 m C. 1 m D. 64 m
Mathematics
Use an identity to write the expression as a single trigonometric function or as a single number.cos24x - sin24x
A. 2 sin 4x
B. cos 8x
C. cos 4x
D. 
sin 16x
Mathematics
Find the quotient.63 ÷ (-7)
A. 9 B. -10 C. -9 D. 10
Mathematics