anonymous
  • anonymous
how do you determine the value of cos for A? and sin for B and tan for A & B? I am extremely confused using this scientific calculator.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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phi
  • phi
what model do you have?
anonymous
  • anonymous
TI-36X
phi
  • phi
OK I was looking at the manual (I assume you have a copy) what do you get if you press tan 45 enter?

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anonymous
  • anonymous
1
phi
  • phi
that means you are in degree mode and you found the tangent of 45 degrees is 1 try sin 30 enter (you should get 0.5)
anonymous
  • anonymous
yes
phi
  • phi
now to find the inverse sin of 0.5 clear it, and press sin sin (the sin button twice in a row) then 0.5 enter
anonymous
  • anonymous
0.000152307
phi
  • phi
oops, that is not what I expected. you did sin(sin(0.5))) I wanted to see sin^-1(0.5)
anonymous
  • anonymous
|dw:1332776866793:dw|
phi
  • phi
you do not really need a calculator for this. You need to remember the definition of cosine Did you learn soh cah toa it stands for sin opposite over hypotenuse, cos adjacent over hypotenuse, tan opp/adj
phi
  • phi
|dw:1332777066195:dw|
phi
  • phi
Does this make sense?
anonymous
  • anonymous
it does, I don't want to sound stupid but is line A the angle going up
phi
  • phi
You drew a triangle and labeled the vertexes (angles) A,B,C My A is just the label for the angle in the bottom right
phi
  • phi
To do cos A you need to know which side is the opposite side. The line with the arrow points to the opposite side. The other side is the adjacent side. The hypotenuse is always opposite the 90 deg angle.
anonymous
  • anonymous
so do you consider A to be 25 or 24
phi
  • phi
The legs of the triangle would be AB or AC By A, I mean the measure of the angle formed by legs AB and AC
phi
  • phi
the cos(A) = length adjacent side over length of hypotenuse
anonymous
  • anonymous
okay, I think I got it. Thanks so much for explaing it in detail to me.
phi
  • phi
so cos(A)= 24/25 if you can figure out the calculator A= cos^-1(24/25) = 16.26 degrees (approximately)
anonymous
  • anonymous
you are aweome, I really appreciate your help. I have MS and it has affected my memory and I am not retaining alot of informatin that I am learning..so thanks again! :)
phi
  • phi
yw

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