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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

Thursday, October 24th

Warm Up

A

Find x

Find y

5 x

y

45˚

45˚

B

C

ex 1 figure out which ratio to use find x round to the nearest tenth

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.

ex 2 figure out which ratio to use find x round to the nearest tenth

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.

when we are trying to find a side we use sin cos or tan
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.

part 1 find each angle measure
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

group work
Group Work

Complete 1-5

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