Find the derivative.y = 
A. 
B. 
C. 
D. 
Answer: D
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Provide an appropriate response. A basic relationship between the sine value of an angle and the cosine value of the same angle is given as (sin A)2 + (cos A)2 = 1. Determine sin A if cos A = 0.2588.
A. 0.7412 B. 0.9330 C. 0.8609 D. 0.9659
Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.csc ? = -
, cos ? > 0Find cos 
.
A. 
B. - 
C. - 
D. 
Solve the equation.
= 
+ 
A. 
B. -3
C. - 
D. 3
Solve the problem.The monthly sales volume y (in thousands of dollars) is related to monthly advertising expenditures x (in thousands of dollars) according to the equation 
Spending how much money on advertising will result in sales of at least $50,000 per month?
A. At least $5000 B. At least $7500 C. Between $5000 and $10,000 D. At least $10,000