Use the half-angle formulas to evaluate the given function.cos 
A. 0.2588
B. 0.1951
C. 1.3066
D. -0.9659
Answer: D
Mathematics
You might also like to view...
Add or subtract. Simplify if possible.
+ 
A. 
B. 
C. 
D. 
Mathematics
Evaluate the line integral along the curve C.
ds, C is the curve r(t) = (10 sin 
t)i + (10 cos 
t)j + 12tk, 2 ? t ? 4
A. - 
B. 
C. 
D. 
Mathematics
Prepare a probability distribution for the experiment. Let x represent the random variable, and let P represent the probability.Three coins are tossed, and the number of heads is noted.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Two points A and B are on opposite sides of a building. A surveyor selects a third point C to place a transit. Point C is 48 feet from point A and 74 feet from point B. The angle ACB is 49°. How far apart are points A and B?
A. 111.5 ft B. 100.6 ft C. 73.8 ft D. 55.9 ft
Mathematics