Want to create interactive content? It’s easy in Genially!
SOHCAHTOA -Trigonometry
Maisie Hawkes 9M
Created on June 21, 2023
Start designing with a free template
Discover more than 1500 professional designs like these:
View
Smart Presentation
View
Practical Presentation
View
Essential Presentation
View
Akihabara Presentation
View
Pastel Color Presentation
View
Visual Presentation
View
Relaxing Presentation
Transcript
Trigonometry
SOHCAHTOA
go!
How to label a triangle
Hypotenuse- The longest sloping edge opposite the right angle.
Opposite- The side opposite the angle given.
Adjacent- The side that is adjacent to (next to) the angle given.
Practice questions
Answers
HYP
HYP
ADJ
OPP
OPP
ADJ
ADJ
ADJ
OPP
HYP
HYP
OPP
What is SOHCAHTOA?
SOHCAHTOA is an easy way to remember the 3 main trigonometric ratios: Sine (Sin), Cosine (Cos), and Tangent (Tan). Theta is an angle (not the right angle) of the triangle.
Is used to find the opposite or hypotenuse
Is used to find the adjacent or hypotenuse
Is used to find the opposite or the adjacent
Example Question 1:
Label sides of triangle that we have information about
Find the side labelled x.
Choose the trig ratio we need. The trigonomic function that involves the opposite and hypotenuse is sin.
Calculate the unknown side, either by rearranging the equation or using the SOHCAHTOA triangle.
Substitute the values from the triangle into the function
Hover for tip!!
Example Question 2:
Label sides of triangle that we have information about
Find the length of the side labelled x.. Give your answer to 2 d.p.
Choose the trig ratio we need. The trigonomic function that involves the adjacent and hypotenuse is cos.
Calculate the unknown side.
Substitute the values from the triangle into the function
Practice questions
6)
4)
5)
Answers
13.6m
10.8m
3.8cm
6)
4)
5)