savannahbrookec2896
15.12.2020 •
Mathematics
In the expression 3x - 2 -4x + 7, what is the negative coefficient?
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Ответ:
will that be nine
Step-by-step explanation:
Ответ:
Choice A)
======================================================
Explanation:
Refer to the figure below. We start off drawing a right triangle that has opposite side sqrt(7) and adjacent side 5.
This is because tan = opposite/adjacent.
Use the pythagorean theorem to find the hypotenuse is sqrt(32) which simplifies like so
sqrt(32) = sqrt(16*2) = sqrt(16)*sqrt(2) = 4*sqrt(2)
The last thing to do is to take the ratio of the hypotenuse over the opposite side. Recall that csc, aka cosecant, is the reciprocal of sine.
sin = opposite/hypotenuse
csc = hypotenuse/opposite
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So we get the following
So that's why the answer is choice A.