Trigonometry

SOHCAHTOA

This is a mnemonic to help you remember what to multiply and divide.
Remember SOHCAHTOA (Some Old Hag, Cracked All Her, Teeth On Apples)
sine = opposite/hypotenuse
cosine = adjacent/hypotenuse
tan = opposite/adjacent

O
S H

A
C H

O
T A

Which side is the hypotenuse?
1. CA
2. BC
3. AB
Calculate side PQ
1. 71.5mm
2. 54mm
3. 87mm
4. 15mm
Calculate the length of BC.
1. 60mm
2. 45mm
3. 35mm
4. 37.5mm
Calculate AB.
1. 47.7mm
2. 65mm
3. 55mm
4. 48mm
Calculate AB.
1. 35mm
2. 47mm
3. 55.2
4. 23.3mm
Calculate BC.
1. 49mm
2. 55.2mm
3. 65mm
4. 72mm
Calculate BA.
1. 60.2mm
2. 71.5mm
3. 55.2mm
4. 75.7mm
Calculate the angle θ at corner C
1. 62°
2. 57°
3. 45°
4. 44.4°
Calculate angle θ at corner C.
1. 37.8°
2. 38.7°
3. 47.8°
4. 28.7°
Calculate the x (horizontal) component for this vector force.
Calculate the y (vertical) component for the vector force in question 10

Trigonometry

Quiz

SOHCAHTOA