The range r of a projectile is given by r= 2 vsin 20, where v is the initial velocity and 8 is the angle of elevation. If r is to be 3,000 ft 32 and v = 3,000 ft/ sec, what must the angle of elevation be? Give an answer in degrees to the nearest hundredth. ......

The range r of a projectile is given by r= 2 vsin 20, where v is the initial velocity and 8 is the angle of elevation. If r is to be 3,000 ft 32 and v = 3,000 ft/ sec, what must the angle of elevation be? Give an answer in degrees to the nearest hundredth. ......

Mathematics For Machine Technology

8th Edition

ISBN:9781337798310

Author:Peterson, John.

Publisher:Peterson, John.

Chapter84: Binary Numeration System

Section: Chapter Questions

Problem 6A

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Concept explainers

Ratios

A ratio is a comparison between two numbers of the same kind. It represents how many times one number contains another. It also represents how small or large one number is compared to the other.

Trigonometric Ratios

Trigonometric ratios give values of trigonometric functions. It always deals with triangles that have one angle measuring 90 degrees. These triangles are right-angled. We take the ratio of sides of these triangles.

Question

The range r of a projectile is given by r=.
2
vsin 20, where v is the initial velocity and 8 is the angle of elevation. If r is to be 3,000 ft
32
and v = 3,000 ft/ sec, what must the angle of elevation be? Give an answer in degrees to the nearest hundredth.
.....
O A. 0.31°
B. 0.43°
OC. 89.69°
O D. 0.61°
Click to select your answer.
Next
etv AE
AUG
12

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