Find x: Find the angle measure for A, B, C, D, E and F. March 23 (P)/ March 24 (W) Warm Up x 18 C B 55º D 80º F 12 7 A

Instructional Objective Students will be able to solve equations and set up and find right triangle ratios.

Agenda- March 23(P)/March 24(W) Warm up/ Announcements HW- OAH worksheet Equations Practice Groups Right Triangle Vocab Right Triangle Triangle Ratios, pg. 459 Exit Quiz

Homework DUE NEXT CLASS- MID-UNIT Test- similar triangles, proportions and angle relationships pg. 453 – 455 Spiralaterals POW - problem statement (K’s and W’s) - process - results and conclusions - self assessment Due today: Angles/ OAH Worksheet

Equations Practice Break out groups Work with your group to complete your practice worksheet. You have 15 minutes to finish.

review Right Triangle Vocab hypotenuse- the longest side in a right triangle leg opposite- a shorter side in a right triangle that does not help form the angle leg adjacent- a shorter side in a right triangle that helps form the angle

pg. 459 Right Triangle Ratios read together 1.CAREFULLY draw a right triangle on your paper, bigger than the one shown, with angles measuring 55º, 35º and 90º. Record the lengths of the sides. 2. Find the ratios you MUST measure as CAREFULLY as possible!!! Be ready to discuss in 10 minutes.

Trig definitions memorize these!! SOH CAH TOA Sine = “sin” = Cosine = “cos” = Tangent = “tan” =

sin A = cos A = A tan A = 3 5 sin B = cos B = 4 B tan B = Find sin, cos and tan….

Practice finding trig ratios Start together- trig ratio handout Be ready to share your results with the class.

see pg. 460 – 462 REFERENCE for TRIG Trig functions on calculator MAKE SURE YOUR CALCULATOR IS SET TO “DEGREES” > MODE Degree > Radian  Degree (highlight degree) > ENTER >2 nd QUIT

Find values on calculator (write in your class work) 1. cos 37º 2. sin 37º 3. tan 37º 4. cos 89º 5. sin 89º 6. tan 89º