3.4 Sum and Difference Formula Warm-up (IN) 1.Find the distance between the points (2,-3) and (5,1). 2.If and is in quad. II, then 3.a. b. Learning Objective:

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3.4 Sum and Difference Formula Warm-up (IN) 1.Find the distance between the points (2,-3) and (5,1). 2.If and is in quad. II, then 3.a. b. Learning Objective: To use the sum and difference formulas to find the sin, cos, and tan of angles not in the unit circle by hand, and to understand and identify which formula is appropriate given a problem. 5 -3/5 1/2

NOTES And the formulas are…. Sine You need to KNOW these!! Cosine Tangent

Ex 1 – Find the exact value of Rewrite using angles you know!

Ex 2 –

Ex 3 – Establish

HW – pg. 253 #9-13,17,21-24,27-29,31-33 Out – Find Summary – Today I learned… Don’t forget about POW!!