Find the exact value of the indicated trigonometric function of ?, if ? is an angle in standard position whose terminal side contains the given point.
; find sin ? and cos ?.
A. sin ? = - 
, cos ? = 
B. sin ? = - 
, cos ? = - 
C. sin ? = 
, cos ? = - 
D. sin ? = 
, cos ? = - 
Answer: C
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Use the fundamental identities to simplify the expression.cos x tan x
A. 1 B. cos x C. sin x D. cot x
The number of Americans aged 45 to 54 (which stood at 25 million at the beginning of 1990) grew at the rate of
?
?
million people/year, 
years from the beginning of 1990. How many Americans aged 45 to 54 were added to the population between 1990 and the year 1999? Give your answer to one decimal place.
?
A. 28.0 million
B. 26.5 million
C. 27.7 million
D. 28.5 million
Solve the problem.Marty's Tee Shirt & Jacket Company is to produce a new line of jackets with an embroidery of a Great Pyrenees dog on the front. There are fixed costs of $630 to set up for production, and variable costs of $28 per jacket. Write an equation that can be used to determine the total cost, C(x), encountered by Marty's Company in producing x jackets.
A. C(x) = 630 - 28x B. C(x) = 630x + 28 C. C(x) = 630 + 28x D. C(x) = (630 + 28) x
Answer the question.The cost of manufacturing clocks is given by c = 121
, where c is the total cost and n is the number produced. What is c when no clocks are produced?
A. $3025 B. $605 C. $121 D. $55