Pythagoras Theorm & Trigonometry

Question 1

We use trigonometry when we have an _________ of interest.

Answer 1

Angle

Question 2

What are the 3 ratios used in trigonometry?

Answer 2

Sine, Cosine & Tangent

Question 3

What do we call the angle of interest?

Answer 3

Pheta

Question 4

What do we call the three sides of the triangles?

Answer 4

Hypotenuse, adjacent and opposite

Question 5

What is the acronym we use in trigonometry?

Answer 5

Sohcahtoa

Question 6

What is the equation for Pythagoras Theorm?

Answer 6

a2+b2=c2

Question 7

What are the steps to write the equation in trigonometry?

Answer 7

1. Label the sides
2. What ratio? Sohcahtoh
3. Use the formula triangle to find the equation (shade out the one you are trying to find, then use that at the start of the equation (eg: o= ). Then write the rest of the equation and after the ratio one out ‘pheta’ (eg: o= sin ø x h)
4. Substitute in values

Question 8

When using Pythagoras Theorm to find an unknown side that is not the hypotenuse, make sure the length of the hypotenuse is substituted into the ______ term

Answer 8

c2 c squared

Question 9

What are the steps for calculating an unknown angle using trigonometry?

Answer 9

1. What sides do I have? Label them.
2. Which ratio do I use? Sohcahtoh
3. Get formula from formula triangle (eg: sinø = o/h)
4. Substitute in values
5. Solve equation