Basic Trig
Do you really know your trig?
Angle of depression or Angle of Elevation?
These words make it trickier...
100
Sin is what side over what side?
Opposite / Hypotenuse
100

What's Opposite/ adjacent?

Tan

100
You're looking at the top of Mount Rushmore from the ground.
Angle of Elevation
100

You're trying to use a ladder to access your room for some reason. You're 30 ft away from your window, and your window is 10 ft high. At what angle from the ground do you need to put your ladder?

= 18.435 degrees

200
Cos is what side over what side?
Adjacent/ Hypotenuse
200
What's hypotenuse/ opposite?
Csc
200
You're walking on a sidewalk and someone throws an egg at you from their window on the second floor and you look up.
Angle of Elevation
200
It's night time, and someone is standing in your backyard. You're looking out the window on the second floor and you want to shine a flashlight on this mysterious person. Your window is 15 ft from the ground, your line of sight is 68 ft (hypotenuse of triangle). At what angle do you need to shine the flashlight?
= 77.256 degrees
300
Tan is what side over what side?
Opposite / Adjacent
300
What's adjacent/ hypotenuse?
Sec
300
You're at the top of balcony looking down at the person who just dropped all their groceries.
Angle of Depression
300

The escalator rises at an angle of 18 degrees from the ground. The escalator is 25 ft tall. If someone is going down the escalator with the same measurements, what angle are they descending at? How long are both people's line of sight (the hypotenuse of the triangle)?

Angle of descending = 72 degrees Line of sight = 80.902 feet

400
Quick, whats the anagram used by most people for sin, cos, and tan? THINK!!
SOH CAH TOA
400
Match up sin, cos, and tan with their opposite trig functions.
Sin = Csc Cos = Sec Tan = Cot
400
Are angle of depression and angle of elevation alternate interior angles or interior alternate angles?
Alternate interior angles.
M
e
n
u