Investigation 8A Bl 2.notebook

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December 12, 2012

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WARM UP :Read and take notes on page 682 - 683 as necessary. If this is something you do not remember, you need to do p686 7-15, tonight

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Investigation 8A Bl 2.notebook

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December 12, 2012

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What can you tell me if the cos(Θ)=5/13 ?What about the triangle?What about the hypotenuse? the legs?What about sin(θ) tan(θ)? What about θ?

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What happens if we are not in the first quadrant?

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Investigation 8A Bl 2.notebook

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What is this measuring?What part of Paul's position?

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Investigation 8A Bl 2.notebook

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p695

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p691 (14-16,19,20)p695(1,4,7,8a,8b,8e,10-13)

Investigation 8A Bl 2.notebook

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December 12, 2012

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Investigation 8A Bl 2.notebook

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p697

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Warm Up 1. Write the Pythagorean theorem2. Divide both sides by c3. Replace the ratios with its trigonometric name.Write the statement!

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p685

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Investigation 8A Bl 2.notebook

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December 12, 2012

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p699

If Cos 20 =.940, find

Co terminal Angles

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p700

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Investigation 8A Bl 2.notebook

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December 12, 2012

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p697

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p697

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p697

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December 12, 2012

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p697

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Homeworkp 701, 1,2,5-8,13,17,20

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p701

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p701

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p701

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WARM UP... Negative Angles? page 701

sin 150 cos 210 sin 225 sin 240

cos(-135) cos(135) tan(270) tan(720)

Find The exact values (NO calculators please)

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What about negative angles?Consider the following...sin(-30o) cos(-30o)sin(-330o) cos(-330o)

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p701

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page 702Quick: Check Your Understanding

9.

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Investigation 8A Bl 2.notebook

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1. Draw a circle with a radius of r2. Pick a points on the circle and label (x,y) 3. Now give the coordinates of the point in terms of the angle q (Hint drop a line perpendicular to from the point to the x axis to draw a triangle)4. x =     y = 5. Write the equation of all circles with a radius of r. 6. Use #4 to create a new equation.7. Divide by r2

(x,y)

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Investigation 8A Bl 2.notebook

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Pythagorean identity????

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FIND SOME EXACT VALUES...WITHOUT A CALC PLEASE...

a.) sin225o b.) cos330o c.) tan 120o

Warm UP

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Food for thought...

Solve: cosB=1/2

Simplify the following identity

sin btan b

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Investigation 8A Bl 2.notebook

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p 709

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Homework p 706 (#3-5,8)p711 5,6,8-11,14

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p706 #14Angle Sine a cosine a tan a

0 30

456090

120 135 150 180 210 225 240 270 300 315 330 360

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Investigation 8A Bl 2.notebook

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Investigation 8A Bl 2.notebook

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December 12, 2012

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WARM UP...1.) Find the height of an equilateral triangle with a side length of 1.

2.) Find the area of a right isosceles triangle that has a hypotenuse of 1.

3.) Complete (1-5)p715

EXACT VALUES ONLY PLEASE

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p715

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3.) How do the two previous problems relate to the chart on page 716???

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Great Test Question... Evaluate: cos3(45o) +cos(45o)sin2(45o)

You have only thirty seconds...GO GO GO GO

OR

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Investigation 8A Bl 2.notebook

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