scientist watches a rocket rising vertically off the ground from a point that is 150 meters away on level ground. How fast is the rocket's angle of elevation increasing when the angle of elevation is 30 degrees if the rocket has attained a speed of 25m/sec at this time?

Q: Two cars start moving from the same point. One travels south at 48 mi/h and the other travels west…

A:

Q: A car leaves the city traveling north at a constant speed of 60 miles per hour. A second car leaves…

A: The details solution of the given question is given below in step 2.

Q: A 4-foot child is walking away from a streetlight 16 feet high at a rate of 2 feet per second. At…

A:

Q: You are standing 12 feet away from a balloon launcher that will release a balloon vertically up into…

A:

Q: A car traveling at the rate of 20m/s is approaching an intersection. When the car is 100 meters from…

A: Situation can be easily understood by using the figure:

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.