A helicopter takes o from a point 80 m away from an observerlocated on the ground, and rises vertically at 2 m/sec. At what rate is theelevation angle of the observer's line of sight to the helicopter changingwhen the helicopter is 60 m above the ground?

Q: A balloon released at point P rises vertically with a constant speed of 6 m/s. Point Q is level with…

A:

Q: An airplane is flying in calm air with an airspeed of 300 mph. If the plane is gaining climbing at…

A:

Q: A small rocket is launched straight up in the air at a speed of 4ft/sec. A camera on the ground, 10…

A: Consider the given information. At any time t, rocket is at C tanθ=ACAB=AC10

Q: A golfer hits a ball, giving it a maximum height of 30 m. If the ball lands 145 m away at the level…

A: The objective of this question is to find the initial velocity in the horizontal direction of a golf…

Q: 10. A kite 50 ft high, with 90 f of cord out. If the kite is moving horizontally at 3 ft/ sec…

A: Given:                           Height of kite =50 ft       dxdt=3 ft/sec

Q: A football quarterback throws a 100-yd "bomb" at a of 45° from the horizontal. What is the initial…

A: Formula for the range of a projectile is where 'g' is acceleration due to gravity its value is 10.72…

Q: A ball is thrown from the top of one building toward a tall building 15m away. The initial velocity…

A: A ball is thrown from the top of one building toward a tall building 15m away. The initial velocity…

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.