lala2
just a quick question!
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lala2
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in triangle ABC , angle B is a right angle. AB+30 and Sec A=5/3. find each value in fraction and decimal form
lala2
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sin A
lala2
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someone??
aditya96
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sin a =4/5
lala2
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ok but how did you get that
aditya96
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|dw:1369794012893:dw|
here sec a=hyppoteneus/adjacent so hp=5 and adj=3 so opposite side =4 by pythagorus thm so sin a=opposite/hypp=4/5
lala2
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its sin A
lala2
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isnt sin opposite/ hypotenuse
aditya96
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no sinA=opposite/hyp
chrisplusian
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you said sec A=5/3 so the sec=hyp/adj. the hyp=5 and the side adjacent to angle A would be adjacent. Through pythagorean theorem you can find the other value because it is a right triangle
lala2
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in the pathagorema theorem what values go with what
is a=5 and c=3?
lala2
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@chrisplusian @aditya96
aditya96
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b=4
lala2
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i know that but i need to show work so what goes where
lala2
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does a=3 c=5?
aditya96
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(hypo)^2=(side 1)^2 +(side 2)^2
lala2
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@chrisplusian can you help me with one more
lala2
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csc C
lala2
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sam thing but with these values
chrisplusian
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The trick with pythagorean theorem is that the "c" is always the hypotenuse
lala2
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ohh
chrisplusian
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Csc=Hyp/opp so the opposite side from angle C is =3 and the hypotenuse is =5. so csc C =5/3
chrisplusian
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Hope that helps @lala2
lala2
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yes it does alot! thanks soo much!
chrisplusian
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no problem I have to do some studying now so good luck
lala2
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ok thanks again!