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Thursday, October 24 th

Thursday, October 24 th. Warm Up. A. Find x Find y. 5 x y. 45 ˚. 45 ˚. B. C. Skills Check. Finding an angle. (Figuring out which ratio to use and an inverse trig button.). 20 m. ). 20 / 40. Tan -1. 4 0 m.

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Thursday, October 24 th

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  1. Thursday, October 24th Warm Up A Find x Find y 5 x y 45˚ 45˚ B C

  2. Skills Check

  3. Finding an angle.(Figuring out which ratio to use and an inverse trig button.)

  4. 20 m ) 20 / 40 Tan-1 40 m Ex: 1 Figure out which ratio to use. Find x. Round to the nearest tenth. x Shrink yourself down and stand where the angle is. Now, figure out which trig ratio you have and set up the problem.

  5. 50 m 15 m ) 15 / 50 Sin-1 Ex: 2 Figure out which ratio to use. Find x. Round to the nearest tenth. x Shrink yourself down and stand where the angle is. Now, figure out which trig ratio you have and set up the problem.

  6. Ex. 3: Find . Round to the nearest degree. 17.2 9

  7. Ex. 4: Find . Round to the nearest degree. 7 23

  8. Ex. 5: Find . Round to the nearest degree. 200 400

  9. When we are trying to find a side we use sin, cos, or tan. When we are trying to find an angle we use (INVERSE) sin-1, cos-1,ortan-1.

  10. Part 1 Find each angle measure • Sin B=.4848 2. Sin A=.5150 3. Cos A=.7431 4. Cos W=.6157 5. Cos A=.5878 6. Tan W=19.0811 7. Cos A=.4226 8. TanW=.5317

  11. Part 2: Find the measure of angle 9. 10. 11. 12. 13. 14.

  12. Group Work Complete 1-5

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