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Kazwaz
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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 ?
 9 months ago
 9 months ago
Kazwaz Group Title
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 ?
 9 months ago
 9 months ago

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

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
dw:1393719640331:dw
 9 months ago

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

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

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

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

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

Kazwaz Group TitleBest ResponseYou've already chosen the best response.0
So 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?
 9 months ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
dw:1393720948851:dw
 9 months ago

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

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

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

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