catgirl17
pre-cal
Find (a) sin a and cos B, (b) tan a and cot B, and (c) sec a and csc B.
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catgirl17
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|dw:1347217242148:dw|
dpaInc
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since this is a right triangle, can you give me the length of the hypotenuse?
dpaInc
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hello?
dpaInc
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meow?
catgirl17
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so would i do the pythag. theorm?
dpaInc
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yes....
catgirl17
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what do i do after that?
dpaInc
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do you know the definition o the trig functions? or better yet, the acronym:
SOHCAHTOA:
Sine = Opposite/Hypotenuse
Cosine = Adjacent/Hypotenuse
Tangent = Opposite/Adjacent
catgirl17
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yes
dpaInc
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ok... so once you have the hypotenuse, you can determine the trig ratios for the angles that you want....
dpaInc
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so... what do you have for the length of the hypotenuse?
catgirl17
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\[\sqrt{34}\]
dpaInc
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|dw:1347218499018:dw|
now you can you determine the trig ratio's???
catgirl17
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okay thanks
dpaInc
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yw...:)
Chlorophyll
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@catgirl17 Do you want to post your result, so we can double check?
catgirl17
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okay
catgirl17
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a) \[3\sqrt{34}/34 \] \[5\sqrt{34}/34\]
Chlorophyll
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a) the result should be the same: 3/ √ 34 ( 3√ 34/ 34 )
catgirl17
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why?
catgirl17
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b) 3/5 , 5/3
c) \[\sqrt{34}/5\] , \[\sqrt{34}/3\]
Chlorophyll
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sinA = opp/ hyp = 3/√ 34
cosB = adj/ hyp = 3/√ 34
Chlorophyll
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When you can fix your a)
then go ahead fix b) and c)
catgirl17
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b) 3/3, 3/3
c) \[\sqrt{34}/3\] \[\sqrt{34}/3\]
Chlorophyll
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b) tanA = opp/ adj = 3/5
catgirl17
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okay
Chlorophyll
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C) secA = hyp/ adj = √ 34/5
catgirl17
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okay
Chlorophyll
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@catgirl17 That's the reason you need to volunteer post your working solution, so we can help you through the correct final result!