The perimeter of the top of a desk is 54 inches. If the length of the desk is 15 inches, what is the width of the desk?
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Answer:
11 km
Step-by-step explanation:
Assuming your "direction 030°" is a bearing measured clockwise from north, the amount the motorist moved east on the first leg of the journey was ...
(36 km)sin(30°) = 18 km
From that point, moving 7 km west makes his easterly position ...
18 km -7 km = 11 km . . . . east of O
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The sine of an angle is the ratio of the side opposite to the hypotenuse. You can find the length of the side opposite (the easterly motion) by multiplying the sine of the bearing angle by the distance of travel. A diagram can help.
Up to multiples, if you're given the roots you can write the polynomial by multiplying several parenthesis in the form
where is a root. So, in your case, you have
We can fix the parameter a by imposing f(0)=60:
So, your polynomial is