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March 19, 2026, 03:14:46 pm
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lnaa19

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Question
« on: March 22, 2012, 04:24:44 pm »
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The question seems a little ambiguous, or maybe I just don't know my stuff.

"tanA=x/3,   cosA=3/sqrt(9+x^2),   sinA= x/sqrt(9+x^2)

Using the above, find the exact values of a, b in f(x) = 2ax/(bx^2+a^2)."

Help me out :(
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Planck's constant

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Re: Question
« Reply #1 on: March 22, 2012, 08:10:29 pm »
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Quote from: lnaa19 on March 22, 2012, 04:24:44 pm
The question seems a little ambiguous, or maybe I just don't know my stuff.

"tanA=x/3,   cosA=3/sqrt(
Help me out :(

Is the answer a=6, b=4 by any chance?
« Last Edit: March 22, 2012, 08:17:13 pm by argonaut »
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lnaa19

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Re: Question
« Reply #2 on: March 22, 2012, 09:11:17 pm »
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I don't know what the answer is, it just says to show working.
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BubbleWrapMan

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Re: Question
« Reply #3 on: March 23, 2012, 03:25:21 pm »
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Can't be done with the information given, since there's no relationship between the two lines
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Tim Koussas -- Co-author of ExamPro Mathematical Methods and Specialist Mathematics Study Guides, editor for the Further Mathematics Study Guide.

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