9514 1404 393
Answer:
15/17
Step-by-step explanation:
cos(arctan(8/15)) = 15/17
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You could assume the ratio values 8 and 15 represent the opposite and adjacent sides of a right triangle. Then the hypotenuse is ...
h = √(8² +15²) = √289 = 17
The cosine is the ratio of the adjacent side to the hypotenuse, so is ...
cos(x) = 15/17
it is D
(1.5-6)/-2-4 =0.75
1/19
p(x) = A(x - 4i)(x + 4i)(x - 3)(x + 3), with A = 1.
it matches
the answer is 7.5
A
