Math Is Fun Forum

  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#3 Re: Help Me ! » (Less than) 21 Trig Questions from Amrita » 2014-06-10 20:18:21

Agnishom, please explain me the problem of Post : 94 in a much easier way.

#4 Re: Help Me ! » (Less than) 21 Trig Questions from Amrita » 2014-05-30 00:15:50

If tan(a-b) = 1 , sec(a+b) = 2/√ 3 ; find smallest (+ve) value of b.

#5 Re: Help Me ! » (Less than) 21 Trig Questions from Amrita » 2014-05-27 21:13:46

Prove that  (2√ 3+3)sinθ +(2√ 3)cosθ lies between    -(2√ 3+√ 15) and (2√ 3+√ 15)

#6 Re: Maths Is Fun - Suggestions and Comments » Please lower the flood limit » 2014-05-26 05:23:49

This is a point to be noted,Agnishom. What Bobbym told is quite Rational.

#7 Re: Maths Is Fun - Suggestions and Comments » Please lower the flood limit » 2014-05-26 05:17:49

The Flood Limit of 1 min between 2 posts is really very irritating,I whole-heartedly admit it.

#8 Re: Dark Discussions at Cafe Infinity » Happy Birthday, Alokananda! » 2014-05-24 19:48:31

Happy Birthday,Alokananda.  Wish u a very happy and prosperous life ahead.

#9 Re: Help Me ! » (Less than) 21 Trig Questions from Amrita » 2014-05-19 06:41:18

O.k.  Shivam.

If a=b cos(2π /3)=c cos(4π /3) , then find: ab+bc+ac.

#10 Re: Help Me ! » (Less than) 21 Trig Questions from Amrita » 2014-05-19 06:30:40

I understood it.Thnx.Can I give u another sum plz?

#11 Re: Help Me ! » (Less than) 21 Trig Questions from Amrita » 2014-05-19 06:14:55

Thank u vry mch,Bob. But I could'nt understand why cos(a+t) = -cos(a+t) need 2 b shown in the 3rd last step?

#13 Re: Help Me ! » (Less than) 21 Trig Questions from Amrita » 2014-05-19 05:39:19

Can u plz help me out with a sum?
If 3sinθ +4cosθ =5,then 4sinθ -3cosθ =?

#14 Re: Help Me ! » (Less than) 21 Trig Questions from Amrita » 2014-05-17 21:28:21

Agnishom, Bob had done it finally. See it.

#21 Re: Help Me ! » Trig Proof Help » 2014-05-05 07:26:26

yes bob,u can show them.i would like 2 know it.

#22 Re: Help Me ! » Trig Proof Help » 2014-05-05 07:24:51

thnx. can u plz help with this sum?   if x+a is the hcf of x^2 + px +q and x^2 + lx + m,find the value of a.

#23 Re: Help Me ! » Trig Proof Help » 2014-05-05 07:14:49

actually my 1 GB net in dongle was finished.can u plz tell me the formula bob bundy was talking about?

#24 Re: Help Me ! » Trig Proof Help » 2014-05-05 07:04:11

hello bobym,how r u?talking 2 u after a long time.

#25 Re: Help Me ! » Trig Proof Help » 2014-05-05 06:56:36

can u plz tell me the  formulae?

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