Need help w/ 2 Qs: What angle will a 5-meter ladder make with a wall if...?

[THe Doctor]

1) What angle will a 5-meter ladder make with a wall if it reaches 4.2 meters up the wall?Fr

2) From a vertical cliff 80-meters above sea level, a fishing boat is observed at an angle of depression of 6 degrees. How for out is the boat?

 

[Harry_the_cat]

1) What angle will a 5-meter ladder make with a wall if it reaches 4.2 meters up the wall?Fr

2) From a vertical cliff 80-meters above sea level, a fishing boat is observed at an angle of depression of 6 degrees. How for out is the boat?

Q1 first. Have you drawn a diagram?

 

[stapel]

1) What angle will a 5-meter ladder make with a wall if it reaches 4.2 meters up the wall?

You drew the right triangle. You labeled the two given sides. You applied the obvious trig ratio. And... then what?

2) From a vertical cliff 80-meters above sea level, a fishing boat is observed at an angle of depression of 6 degrees. How for out is the boat?

To learn how to set up and solve this sort of exercise, try here. Once you have learned the basic terms and techniques, please attempt the exercise. If you get stuck, you can then return here and provide a clear listing of your efforts so far. Thank you! ;-)