Angle of elevation is 15 degrees and we're trying to solve for the hypotenuse of the right triangle given the adjacent is 7.11 m.
We could use primary trig ratios to solve - COS.
Let x represent the length of the ramp (hypotenuse)
Cos15= ADJACENT/HYPOTENUSE
Cos15= 7.11/x
x=7.11/cos15
x=7.36 m
<span>Therefore, the ramp is 7.36 m in length.
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Well if you have a radius remember to divide by 2 . So divide your number by 2. And you should get 5x
Perimeter is P = 2l + 2w. From the question you know that w = 2l + 5 and that P = 28. To find l, plug the expression for w into the perimeter equation:
28 = 2l + 2(2l + 5)
28 = 2l + 4l + 10
28 = 6l + 10
18 = 6l
3 = l
Now find w by plugging 3 into its equation - w = 2(3) + 5. w = 11
Lastly, check your work by plugging everything back into the perimeter equation: 28 = 2(3) + 2(11), which is 28 = 6 + 22. Correct! So the length is 3 in and the width is 11 in.
The answer is 6-3+(5•2)
=13
