Find the exact value under the given conditions.sin ? =
,
< ? < ?; cos ? =
, 0 < ? <
Find sin (? - ?).
A.
B.
C. -
D.
Answer: A
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Solve the problem. Round your answer, if appropriate.As the zoom lens in a camera moves in and out, the size of the rectangular image changes. Assume that the current image is 7 cm × 6 cm. Find the rate at which the area of the image is changing (dA/df) if the length of the image is changing at 0.6 cm/s and the width of the image is changing at 0.3 cm/s.
A. 12.0 cm2/sec B. 11.4 cm2/sec C. 6.0 cm2/sec D. 5.7 cm2/sec
Evaluate the sum.
A.
B. 182
C. 13
D. 91
Use front end rounding to round the number.There were 31,664 fans at the football game.
A. 40,000 fans B. 30,000 fans C. 41,000 fans D. 31,000 fans
Solve.A supporting wire is to be attached to the top of a 39-foot antenna. If the wire must be anchored 39 feet from the base of the antenna, what length of wire is required?
A. 39 ft
B. 39 ft
C. 78 ft
D. 3042 ft