Reference Triangle Trig

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tan Θ = 1.732, 0<Θ<360, find both angles

• 120 & 330

• 60 & 330

• 120 & 240

• 60 & 240

Draw the terminal side of α which passes through (-2, -5). what is the measure of "r"

• √7

• √21

• √29

• √21

cos(30⁰)

• 1/2

• √3/2

• √2/2

• 0

What two angles have the same value for Tan?

• 0^o

• 45^o and 135⁰

• 45^o and 225⁰

• 45^o and 315⁰

Find a.

• 3

• 6

We can use SOH-CAH-TOA for...

• Any triangle ever

• Non-right triangles only

• Right Triangles only

• Never

Mathematical Equivalence

ON

sin(-120)

• A

• B

• C

• D

cos 135^o

• 1

• -1

• √2/2

• -√2/2