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 Welcome Back . Lesson Plan. EQ: How do we solve for a missing piece of the trig puzzle? Agenda: Warm Up Partner Worksheet Notes on Solving Trig Equations Homework: Worksheet on Inverse Trig Equations. Warm Up. What are the 6 trig functions and their ratios?

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###  Welcome Back 

Lesson Plan

EQ: How do we solve for a missing piece of the trig puzzle?

Agenda:

• Warm Up
• Partner Worksheet
• Notes on Solving Trig Equations

Homework:

• Worksheet on Inverse Trig Equations
Warm Up

What are the 6 trig functions and their ratios?

sine, cosine, tangent, cosecant, secant, cotangent

sinθ= opp/hyp

cosθ = adj/hyp

tanθ = opp/adj

cscθ = hyp/opp

secθ = hyp/adj

cotθ = adj/opp

Partner Worksheet
• Everyone gets the same worksheet
• Partner 1 odds, Partner 2 evens
• Complete your half and check with key
• Ask me/your neighbors if you don’t understand some of them
• You’re now the Master of those problems
• Complete the other half of the worksheet
• Meet with your partner, check each other’s answers and work together to help your partner Master all problems
Let’s review the pieces…
• Opposite, adjacent and hypotenuse all refer to what?
• θ, β, α, A, B, X, and Y all refer to what?
• To sum it up:
Setting Up Trig Equations

What if we do know the measure of one of the acute angles but are missing a side?

• Which trig function would we use here?
• What would the equation look like?

x

45°

4 cm

Setting Up Trig Equations
• Which trig function would we use here?
• What would the equation look like?

12 ft

x

30°

What if we are are trying to solve for the angle?

Which Trig function should we use?

β

40 m

20 m

T.O.D.

Finish #’s 1, 9, 17 and have me check them before you leave.