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 11 months ago
If tan x =3/5 and x is greater than 180 degrees but smaller than 270 degrees. What is the exact value of sin x and cos x ?
 11 months ago
If tan x =3/5 and x is greater than 180 degrees but smaller than 270 degrees. What is the exact value of sin x and cos x ?

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Mertsj
 11 months ago
Best ResponseYou've already chosen the best response.1That means the angle is in Quadrant III

Mertsj
 11 months ago
Best ResponseYou've already chosen the best response.1Find the hypotenuse then use the definitions of sin and cos. (Remember: sin and cos are both negative in Quadrant III)

Kazwaz
 11 months ago
Best ResponseYou've already chosen the best response.0Sorry, can you go a bit further. Trying to help my daughter .

Mertsj
 11 months ago
Best ResponseYou've already chosen the best response.1Would I be correct in assuming that you know the Pythagorean Theorem?

Mertsj
 11 months ago
Best ResponseYou've already chosen the best response.1Use it to find the hypotenuse in that right triangle.

Mertsj
 11 months ago
Best ResponseYou've already chosen the best response.1I believe your problem specifies "exact form"

Kazwaz
 11 months ago
Best ResponseYou've already chosen the best response.0So I leave it as sq root 34. Then cos x is 5/sq root 34 and sin x is 3/sq root 34. Is that correct?

Kazwaz
 11 months ago
Best ResponseYou've already chosen the best response.0Sorry, why are you multiplying by sq rt 34, then dividing by 34 ?

Mertsj
 11 months ago
Best ResponseYou've already chosen the best response.1It is not considered simple form to have a radical in the denominator.

Mertsj
 11 months ago
Best ResponseYou've already chosen the best response.1\[\frac{5}{\sqrt{34}}\times \frac{\sqrt{34}}{\sqrt{34}}=\frac{5\sqrt{34}}{34}\]

Kazwaz
 11 months ago
Best ResponseYou've already chosen the best response.0Thanks for that. You've Ben a great help.
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