Solve the problem.A wooden block sitting at rest on a flat, level board will just begin to slide when the board is tilted up to a critical angle of inclination, ?s . An experiment that determines this critical angle can be used to find the coefficient of static friction, ?s , for the block on the board by using the relation 
Rewrite this relation using a quotient identity.
A. ?s = sec ?s
B. ?s = tan2 ?s
C. ?s = tan ?s
D. ?s = cot ?s
Answer: C
Mathematics
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Evaluate the integral.
A. - 135
B. - 
C. - 
D. - 45
Mathematics
Solve the problem.Ben lost $501 on each of 4 consecutive days in the stock market. If he had $15,586 before his loss, how much does he have after his loss?
A. $17,590 B. $13,582 C. $2004 D. $15,085
Mathematics
Solve.138 = 6m
A. m = 132 B. m = 21 C. m = 23 D. m = 828
Mathematics
Find the domain of the rational function.f(x) = 
A. all real numbers except 0 B. all real numbers except 9 C. all real numbers D. all real numbers except 0 and 9
Mathematics