A princess is being held captive in a tower. Her prince charming, Mr. Anderson is on the ground
below with a ladder. When Mr. Anderson stands
20 feet from the base of the tower and looks up
at his precious princess, the angle formed
between the ground and the ladder is 70
degrees. How long is the ladder? Round
answers to the nearest tenth.

Can some one explain this i got sent this. is this a threat i’m scared

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?

What is the period of the sinusoidal function ?