Math 9 4th Quarter Review

Triangle DEF is right-angled at E. If e=25 and f=15, find angle D in degrees. Express your answer up to two decimal places.

Triangle DEF is right-angled at E. If e=25 and f=15, find angle F in degrees. Express your answer up to two decimal places.

Triangle DEF is right-angled at E. If e=25 and f=15, find d. Express your answer up to two decimal places.

Triangle GHI is right-angled at H. If 𝑔=20 and ℎ=24, find angle G in degrees. Express your answer up to two decimal places.

Triangle GHI is right-angled at H. If 𝑔=20 and ℎ=24, find angle I in degrees. Express your answer up to two decimal places.

What is the opposite side to <D?

• DF

• DE

• EF

What is the length of the opposite side?

• 15

• 17

• 8

What is the length of the adjacent side?

• 17

• 8

• 15

The Tangent Ratio represents ...

• Opposite over Adjacent

• Hypotenuse over Opposite

• Opposite over adjacent

• Ratio over opposite

What can you find with trig ratios (sin, cos, tan)?

• Missing sides

• missing angles

• area of a triangle

• missing sides, angles and area of a triangle