Thursday october 24 th
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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

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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


Skills check

Skills Check


Finding an angle figuring out which ratio to use and an inverse trig button

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


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: 2Figure 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 3 find round to the nearest degree

Ex. 3: Find . Round to the nearest degree.

17.2

9


Ex 4 find round to the nearest degree

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

7

23


Ex 5 find round to the nearest degree

Ex. 5: Find . Round to the nearest degree.

200

400


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=.48482. Sin A=.5150

    3. Cos A=.74314. Cos W=.6157

    5. Cos A=.5878 6. Tan W=19.0811

    7. Cos A=.42268. TanW=.5317


Part 2 find the measure of angle

Part 2: Find the measure of angle

9. 10.

11.12.

13.14.


Group work

Group Work

Complete 1-5


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