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problem is hard and i dont know how to solve need help

0 votes

If a projectile is fired with velocity v0 at an angle θ, then its range, the horizontal distance it travels (in feet), is modeled by the function

R(θ) = 
v02 sin 2θ
32
.

If

v0 = 2200 ft/s,

what angle (in degrees) should be chosen for the projectile to hit a target on the ground 4000 ft away? (Enter your answers as a comma-separated list. Round your answers to three decimal places.)
θ =

 

°

asked Apr 9, 2016 in PRECALCULUS by anonymous

1 Answer

0 votes

Step 1:

The projectile is fired with velocity image and at angle image.

The equation is image.

Here, Velocity is image and image.

Find the angle image.

Substitute image and image in the equation and simplify.

image

image

Solution :

The projectile to hit a target on the ground image away at the angle image.

answered Apr 12, 2016 by Anney Mentor

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