Answer:
54.5°
Step-by-step explanation:
You know that in a right triangle, the sine of an angle is given by ...
Sin = Opposite/Hypotenuse
sin(D) = EF/ED = 57/70
The inverse sine function is used to find the angle:
∠D = arcsin(57/70)
∠D ≈ 54.5°
Answer:
(x+3)(x+7)
Step-by-step explanation:
3 and 7 are factors of 21, and they add up to 10.
The answer is:
________________
n = ¼ ; or, write as:
n = 0.25
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Explanation:
__________________
-7 / (2n) = 49 ;
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-49 * (2n) = -7 ;
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Divide each side by "(-49)" ; to isolate the "2n" on one side, and to get rid of the "negative" values:
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[-49*(2n)] / -49 = -7/ -49 ; to get:
_______________________________
2n = (½); Now, divide EACH side of the equation by "2"; to isolation "n" on one side of the equation, and to solve for: "n";
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2n / 2 = (½) / 2 ;
_________________
To get:
_______________
n = ¼ ; or, write as:
n = 0.25
____________________
Answer:
wha?
Step-by-step explanation: