24 Answered Questions

1 Answered Questions

5 Answered Questions

[SOLVED] Prove $ \sin(A+B)\sin(A-B)=\sin^2A-\sin^2B $

  • 2012-07-25 17:13:53
  • El Bananero
  • 40150 View
  • 14 Score
  • 5 Answer
  • Tags:   trigonometry

3 Answered Questions

5 Answered Questions

4 Answered Questions

[SOLVED] Proof for the formula of sum of arcsine functions $ \arcsin x + \arcsin y $

10 Answered Questions

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[SOLVED] Computing the integral of $\log(\sin x)$

2 Answered Questions

[SOLVED] Are $\mathrm{arccot}(x)$ and $\arctan(1/x)$ the same function?

  • 2013-02-14 23:21:33
  • Mark
  • 10588 View
  • 9 Score
  • 2 Answer
  • Tags:   trigonometry

4 Answered Questions

3 Answered Questions

15 Answered Questions

[SOLVED] Intuitive understanding of the derivatives of $\sin x$ and $\cos x$

2 Answered Questions

[SOLVED] Proving trigonometric equation $\cos(36^\circ) - \cos(72^\circ) = 1/2$

  • 2014-06-09 05:05:35
  • xzatulx
  • 2614 View
  • 4 Score
  • 2 Answer
  • Tags:   trigonometry

4 Answered Questions

[SOLVED] showing $\arctan(\frac{2}{3}) = \frac{1}{2} \arctan(\frac{12}{5})$

8 Answered Questions

3 Answered Questions

[SOLVED] When the trig functions moved from the right triangle to the unit circle?

3 Answered Questions

9 Answered Questions

[SOLVED] Different definitions of trigonometric functions

6 Answered Questions

[SOLVED] Solving trigonometric equations of the form $a\sin x + b\cos x = c$

  • 2012-10-14 09:36:55
  • rrqq
  • 11710 View
  • 14 Score
  • 6 Answer
  • Tags:   trigonometry

11 Answered Questions

2 Answered Questions

9 Answered Questions

[SOLVED] Why is $\arctan(x)=x-x^3/3+x^5/5-x^7/7+\dots$?

10 Answered Questions

[SOLVED] Why do we require radians in calculus?

10 Answered Questions

8 Answered Questions

[SOLVED] What is the solution of cos(x)=x?