Test Review!

Learning Goals from the Unit

I can solve proportions I can determine angle relationships involving

triangles and parallel lines (all inside angles = 180, Z pattern, F pattern, X pattern, etc)

I can find side lengths of similar trianglesI can find triangle side lengths using sine,

cosine, and tangentI can find triangle angles using sine, cosine,

and tangent (taking the inverse!)I can solve problems involving similar

triangles, Pythagorean Theorem, and Sine, Cosine & Tangent (“Primary trig. ratios”)

Important Terms

Angle of Inclination/ Angle of elevation Angle of Depression

ALWAYS angles made with the HORIZON!!!!

What do we do with this one?

You can’t solve this one! You either Forgot to put in some information Chose the wrong ratio (Can you do sine or cosine

with the other sides?) Need to find some other information first (Use all the

angles add to 180, Pythagorean Theorem, or another ratio)

How do you decide which method to use?

Pythagorean Theorem a2 + b2 = c2

Sin A = opp/hyp Cos A = adj/hyp Tan A = opp/adj

- When you have 2 sides of a right triangle and need the 3rd side

You have 2 of:- Angle- Its Opp

Side- The Hyp

And you need the one leftover

You have 2 of:- Angle- Its Adj

Side- The Hyp

And you need the one leftover

You have 2 of:- Angle- Its Opp

Side- Its Adj side

And you need the one leftover

Use…

A

B C60 cm

35 cm

Which do we use?

θ

Work Time!

Not talk time!