Unknown sides
Unknown angles
Rearrange formula
Riddles
Trivia
100
Sin (angle) =
Opposite / Hypotenuse
100
Inverse of sin(θ)?
sin-1
100
cos (25°) = x/40
Make x the subject
and solve for x
40 x cos(25°) = x
36.3
100
I’m tall when I’m young, and I’m short when I’m old. What am I?
A candle
100
Which fictional city is the home of Batman?
Gotham
200
____ (angle) = Adjacent / Hypotenuse
Cos
200
cos-1(0.3)?
72.5°
200
tan (30°) = x / 6
x = 61/tan(30)
x = 105.7
200
The more of this there is, the less you see. What is it?
Darkness!
200
Which planet is closest to Earth?
Venus
300
Solve for x (to 1 decimal place)
Tanθ = Opposite/Adjacent
16.2 x tan(58°) = 25.9m
300
A. 41.30°
300
sin (5°) = x / 17
x = 17 sin(5°)
300
I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?
Your breath!
300
What is the longest river in the world?
The Nile
400
Solve for m. (correct to 1 decimal place)
use cos ratio
m = 18.8cm
400
Find the angle correct to 1 decimal place
79°
400
What goes up and down but doesn’t move?
A staircase!
400
What is the name of the Snowman in the film “Frozen”?
Olaf
500
Walking along the coastline, Michelle (M) looks up through an angle of 55°and sees her friend Helen (H) on top of the cliff at the lookout point. How high is the cliff if Michelle is 200 m from its base?
(Assume both girls are the same height.)
tan(55) x 200 = 285.6m
500
Jane enjoys water skiing and is about to try a new ramp on the Brisbane River. The inclined ramp rises 1.5 m above the water level and spans a horizontal distance of 6.4 m. What is the angle the ramp makes with the water?
Give the answer correct to the nearest degree.
tan-1(1.5/6.4)
=13°
500
What has a thumb and four fingers, but is not a hand?
A hand!
500
What is the name for a group of owls?
A parliament.