Here we are given an angle 54 degrees. We know the length of the adjacent side: 100ft.
We need to find the length of the opposite side. The equation which involves both the adjacent and opposite is:
tan(theta) = opposite / adjacent.
Rearranging this equation gives opposite = adjacent * tan(theta).
Therefore the width of the river is 100ft * tan(54) = 137.64 feet to two decimal places.
Content will be erased after question is completed.
Enter the email address associated with your account, and we will email you a link to reset your password.
Forgot your password?