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Drownpc

Apparently, this user prefers to keep an air of mystery about them.

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  • suraj.pc-coding.com
  • Member for 8 years, 8 months
  • 269 profile views
  • Last seen Jun 28 '15 at 14:25

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3 Simplify $\tan^{-1}[(\cos x - \sin x)/(\cos x + \sin x)]$ Aug 23 '12
3 By using properties of determinants show that determinant is equal to $(1+a^2+b^2)^3$ Sep 17 '12
2 Write the above function in simplest form. Aug 23 '12
1 Prove $ \sqrt{\arctan(x)} = (1/2) \arccos((1-x)/(1+x))$ Aug 27 '12
1 Prove $\sin((n+1)x) \sin((n+2)x)+\cos((n+1)x) \cos((n+2)x)=\cos(x)$ Aug 29 '12
1 Prove $\cos((3\pi/4)+x)-\cos((3\pi/4)-x)=(-\sqrt{2})\sin(x)$ Aug 29 '12
1 Find the inverse a matrix with trigonometic entries Sep 19 '12
1 Write the following functions in simplest form. Aug 23 '12
0 Why does $\ln|\cot x|=\ln|\cos x|-\ln|\sin x|$ hold? Aug 14 '12
0 Prove tha $\sin^26x-\sin^24x=\sin2x\sin10x$ Aug 29 '12
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