Recent content by DERRAN

Homework Statement No problem just wanted to clarify something. Would the voltmeter reading be the same or different in the two circuit diagrams below.? http://img16.imageshack.us/img16/9428/circuit1.th.gif http://img37.imageshack.us/img37/3300/circuit2.th.gif Homework Equations...

Can someone explain how I can find the resistance of an ohmic resistor of unknown resistance by setting up a simple circuit using a voltmeter and household appliances? Thanks

[b]1. Homework Statement http://img195.imageshack.us/img195/5122/200282.gif Homework Equations The Attempt at a Solution 8.2.1) Let D1 = x D4=D1 =x D4=L1 (tan chord theorem) L1=x D1=L2 L2=x angle KLM=2x KNM=2x(opp angles in //gram)...

Thanks for helping

But x=30 or x=90 then, substitute in the original equation of 2sinx + cosecx and you get the R.T.P answer of 3.

Okay I mapped sinx and got: 2sin^{2}x-3sinx+sinx=0 (2sinx-1)(sinx-1)=0 2sinx=1 or sinx=1 sinx=1/2 Is this correct?

Homework Statement determine the general solution of the equation: 2sinx +cosecx -3 = 0 Homework Equations The Attempt at a Solution Dont know what to do need help please.

thanks again

What is this equation called? tanA=\frac{k_2-k_1}{1+k1*k2} Does this equation not resemble the compound angle identity of tan(A-B)?

Thanks I have found C\widehat{A}B to be 52.1 and reflex \widehat{A} 307,9

Homework Statement http://img196.imageshack.us/img196/5391/29069034.jpg Homework Equations only analytical methods The Attempt at a Solution I found k to be =2 I don't have any idea how to calculate angle A. Please need some help. Thank You.

thanks

Homework Statement Solve the Equation: sec2A - 3tanA - 5=0, for A \in[-90,0] Homework Equations The Attempt at a Solution \frac{1}{cos^{2}A} - \frac{3sinA}{cosA} -5 =0 \frac{1-3sinA.cosA}{cos^{2}A} -5 = 0 ? Did I go wrong? If not I'm stuck...

Thanks, I made a few typing errors.

Homework Statement If sin54=P, express the following in terms of p, without using a calculator. 1] cos18 2] \frac{tan27+cot63}{1+tan207.cot117} Homework Equations The Attempt at a Solution 1] cos18=sin(90-18) =sin(72) sin72=sin(180-108) =sin(180-108)...