Triangle ABC is a right triangle with sides of lengths a, b, and c and a right angle at C. Find the indicated trigonometric function value of A. Rationalize denominators containing radicals.a = 9, b = 7; find sin A.
A. 
B. 
C. 
D. 
Answer: C
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Evaluate the following expression without using a calculator.
?
?
A. 6.6 × 104 B. ?6.6 × 10-3 C. ?6.6 × 107 D. 6.6 × 10-7 E. 6.6 × 10-4
Solve the problem.The polynomial 0.0056x4 + 0.0048x3 + 0.0041x2 + 0.16x + 1.41 gives the predicted sales volume of a company, in millions of items, where x is the number of years from now. Determine the predicted sales 13 years from now. Round to the nearest hundredth.
A. 177.9 million B. 261.13 million C. 174.67 million D. 148.92 million
Verify the identity.
- 
= 4 cot ? csc ?
What will be an ideal response?
Solve the problem.A hardware store spent $13,290 on print and TV advertising last year. If 
of that amount was spent on print advertising, how much was spent on TV advertising?
A. $13,290 B. $18,606 C. $5,316 D. $7,974