Write as a trigonometric function of a single angle, then evaluate. Round to the nearest ten-thousandth when necessary.cos 70°cos 11° + sin 70°sin 11°
A. cos 59° ? 0.515
B. sin 81° ? 0.9877
C. cos 81° ? 0.1564
D. sin 59° ? 0.8572
Answer: A
You might also like to view...
Find an equation for the sphere with the given center and radius.Center (-5, 0, 0), radius = 9
A. x2 + y2 + z2 - 10x = 9 B. x2 + y2 + z2 + 10x = 56 C. x2 + y2 + z2 - 10x = 56 D. x2 + y2 + z2 + 10x = 9
In the indicated voting system, the weights represent, in order, voters A, B, C, and so on. Identify the dictator if there is one, and identify those voters with veto power if there are any.[5 : 1, 1, 1, 1, 1]
A. No dictator; voter A has veto power. B. No dictator; no voter has veto power. C. Each voter is a dictator; each voter has veto power. D. No dictator; each voter has veto power.
Find a power function that models the data in the table. Round to three decimal places if necessary.
A. y = 2.309x2.284 B. y =2.085x3.734 C. y = 27.8x - 36 D. y = 3.734x2.085
Factor by grouping.8x2 + 10x + 12x + 15
A. (2x + 3)(4x + 5) B. (2x - 3)(4x - 5) C. (8x - 3)(x - 5) D. (8x + 3)(x + 5)