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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? 1.Which trig function would we use here? 2.What would the equation look like? 45° x 4 cm

Setting Up Trig Equations 1.Which trig function would we use here? 2.What would the equation look like? 30° x 12 ft

Solving Trig Equations

What if it looks like this…

What if we are are trying to solve for the angle? β 20 m 40 m Which Trig function should we use?

Practice

T.O.D. Finish #’s 1, 9, 17 and have me check them before you leave.

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