You stand 20 ft from a bottle rocket on the ground and watch it as it takes off vertically into the air at a rate of 19 ft/sec. Find the rate at which the angle of elevation from the point on the ground at you feet and the rocket changes when the rocket is 30 ft in the air.

0.292 rad/s

Step-by-step explanation:

Finding distance between the feet and when the rocket is 30 ft in the air

Differentiating with respect to time

Rate of change of the angle is 0.292 rad/s.

the answer for this question is : 360°

step-by-step explanation:

we have been given a triangle   we need to tell which one of these is a triangle below to map onto itself.

360° rotation is the complete rotation which eventually leads to the same figure which is given.

the correct will be, that is 360° that will cause the triangle below to map onto itself.