St. Patrick’s Day Tomorrow! Warm-Up… Describe and correct the error if possible Quickwrite… What do you think is the best way to remember/memorize new information? Explain and give an example. Ex: “I think the best way to remember/memorize new information is by ____________________ because___________________________. For example, ___________________________________________.”

Compare and Explain… your Warm-Up starting with Student #2 (1 min) Describe and correct the error if possible

Round Robin… starting with the student who is sitting furthest away from the door (1 min) What do you think is the best way to remember/memorize new information? Explain and give an example. Ex: “I think the best way to remember/memorize new information is by ____________________ because___________________________. For example, ___________________________________________.”

Practice

The sine & cosine ratios

What are the other trigonometric ratios? Is there an easier way to remember all the ratios? SOH CAH TOA

Example What do you notice? sin S = cos R and sin R = cos S This is true because the side opposite ∠S is adjacent to ∠R and the side opposite ∠R is adjacent to ∠S

The Sine and Cosine of Complementary Angles How do we write sin 56° in terms of cosine? We can use the sine and cosine ratios to find unknown measures in right triangles

Example

Practice

Go on Socrative and answer today’s… Reflection Question: What question(s) do you still have from today's lesson?