? is an acute angle and sin ? and cos ? are given. Use identities to find the indicated value.Given that sin ? = 
and cos ? = 
, find the value of tan ?.
A. 
B. 
C. 
D. 
Answer: D
You might also like to view...
Express the limit as a definite integral.
?xk; [-1, 1]
A. 
B. 
C. 
D. 
Graph the equation by plotting points.y = x3 + 1
A. 
B. 
C. 
D. 
Find the intersection of the sets.{-4, -2, 1, 6} ? {1, 6, 7}
A. {1, 6, 7} B. {-4, -2, 1, 6} C. {1, 6} D. {-4, -2, 1, 6, 7}
Solve the problem.Economists use what is called a Leffer curve to predict the government revenue for tax rates from 0% to 100%. Economists agree that the end points of the curve generate 0 revenue, but disagree on the tax rate that produces the maximum revenue. Suppose an economist produces this rational function 
where R is revenue in millions at a tax rate of x percent. Use a graphing calculator to graph the function. What tax rate produces the maximum revenue? What is the maximum revenue?
A. 34.0%; $271 million B. 36.6%; $268 million C. 41.2%; $264 million D. 35.8%; $276 million