The Myth
The Thief
Either
Trigonometry
Trigonometry
100
When using Pythagoras Theorem, the Hypotenuse is labeled with what letter?
C
100
When using Pythagoras Theorem, the shorter sides are labeled with what letters?
a or b
100
When using Trigonometry, the side across from the right angle is called?
The Hypotenuse
100
When using Trigonometry, the side "touching" the known angle is called the what?
adjacent side
100
When using Trigonometry, the side length across from the 90 degree angle is labeled with what letter?
h (for hypotenuse)
200
When using Pythagoras Theorem, what is the formula to calculate side c?
c=sqrt(a^2+b^2)
200
When using Pythagoras Theorem, what is the formula to calculate side a?
a=sqrt(c^2-b^2
200
When using Pythagoras Theorem, what is the formula to calculate side b?
b=sqrt(c^2-a^2
200
sin (theta)=
O /H
200
cos(theta)=
A /H
300
Calculate the length of the hypotenuse:
26
300
Calculate the length of the Hypotenuse (to 2 dp):
7.62
300
Find side length AB
AB = 8.40
300
35.10 degrees
300
How long is y?
y = 8.66
400
Calculate x (to 2 dp):
23.24
400
Calculate x (to 2 dp):
19.42
400
When using Trigonometry, what formula is used to calculate the opposite side when given the Hypotenuse and an angle?
o=h*sin(theta)
400
When using Trigonometry, what formula is used to calculate the adjacent side when given the Hypotenuse and an angle?
a=h*cos(theta)
400
When using Trigonometry, what formula is used to calculate the Hypotenuse when given the opposite side and an angle?
h=o /(sin(theta)
500
What is the length of bd?
12
500
Abbie rides her bicycle 21 km west and then 18 km north. How far is she from her starting point? (to 2 dp)
27.66 km
500
Ayesha walks 13m north, turns 90 degrees east and then walks 3m forward.
How far is Ayesha from where she started?
13.34m
500
0.69m^2
500
Using Trigonometry, calculate the opposite side when the Hypotenuse = 18 and the angle = 47?
o = 13.16