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anonymous
 one year ago
Given sin (theta) = 21/29... find sin cos and tan (2 theta)
anonymous
 one year ago
Given sin (theta) = 21/29... find sin cos and tan (2 theta)

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Loser66
 one year ago
Best ResponseYou've already chosen the best response.1\(sin(\theta)=\dfrac{opposite}{hypotenuse}\) how about cos(theta)?

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1ok, let them there. Now, pythagorean dw:1435110885323:dw Can you put numbers on the triangle?

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1on that triangle, which side is hypotenuse?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0left side is hyp bottom is adj and right side is opp

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1you use draw box below, click on it, then a box will pop up. On the right corner, you will see "copy previous drawing", click on it, then scroll up to see my picture, click it to get the pic, then put the numbers in, then post

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1hence, the adj side can be calculated by Pythagorean. Do you know him?

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1Mr. Pythagore said : In this case, \(adj = \sqrt{29^221^2}=??\)

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1knock knock!!! adj =??

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1Don't get or you got the answer?? If you don't answer me, I am out in 2 more minutes.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0wait why is it minus?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0isnt the formula a squared plus b squared equals c squared?

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1a^2 +b^2 =c^2, hence a^2 = c^2 b^2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so its asking for 2 theta not just theta

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i got that the adj is 20

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1now, you have all of them, plug in cos (theta) = adj/ hyp = ???

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no i get that part but i need to find sin (2 theta) cos (2 thetha) and tan 2 (theta)

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1ok, tell me cos (theta) =??

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0now how do i find 2 theta?

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1now \(sin(2\theta) = 2 sin(\theta)cos(\theta)\)

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1just plug numbers in, right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ahh gotcha so cos (theta) = 2cos (0) tan (0)?

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1nnnnnnnnnnnnnnnnnoppppppppppe

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1\(cos(2\theta)= cos^2(\theta)sin^2(\theta)\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what is this called? i feel like i should google these formulas lol

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1just type double angle trig formula.

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1But, you should memorize some easy formulas.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0got it thank you so much

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1ok, and you know tan = sin /cos, right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0its not 2 tan ( ) / 1  tan ^2 ( )?

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1you have sin (2 theta), cos (2 theta), why don't you use them?

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1\(tan (\color{red}{x}) =\dfrac{sin(\color{red}{x})}{cos(\color{red}{x})}\) \(tan(\color{blue}{2x})=\dfrac{sin(\color{blue}{2x})}{cos(\color{blue}{2x})}\) got it?

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1good luck. I am out now
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