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ksaimouli
 4 years ago
3cosx+9=7 slove for x
ksaimouli
 4 years ago
3cosx+9=7 slove for x

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myininaya
 4 years ago
Best ResponseYou've already chosen the best response.2Subtract 9 on both sides Then divide both sides by 3

ksaimouli
 4 years ago
Best ResponseYou've already chosen the best response.0yes i got 131.8 another on ew

myininaya
 4 years ago
Best ResponseYou've already chosen the best response.2\[\cos(x)=\frac{2}{3}\] \[\cos(x)=\cos(x+2 \pi n)\] \[\text{ so we have } \cos(x+2 n \pi)=\frac{2}{3}\]

myininaya
 4 years ago
Best ResponseYou've already chosen the best response.2Now take arccos of both sides

myininaya
 4 years ago
Best ResponseYou've already chosen the best response.2\[x+2 n \pi=arc \cos(\frac{2}{3})\]

myininaya
 4 years ago
Best ResponseYou've already chosen the best response.2to solve for x subtract 2npi on both sides

karatechopper
 4 years ago
Best ResponseYou've already chosen the best response.0@myin on this..i have to learn this for ACT, but how would u solve it exactly? what does cos mean?

myininaya
 4 years ago
Best ResponseYou've already chosen the best response.2dw:1326937963668:dw

karatechopper
 4 years ago
Best ResponseYou've already chosen the best response.0opp stands for..........?

karatechopper
 4 years ago
Best ResponseYou've already chosen the best response.0so opposite of hypotenuse?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0cos(x) = 2/3 Find the inverse of the cosine, make sure calculator is in degree mode. x = cos^1(2/3)

myininaya
 4 years ago
Best ResponseYou've already chosen the best response.2great that's one solution
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