Evaluate the following: cos^(-1)(cos((2p...

Evaluate the following: `cos^(-1)(cos((2pi)/3))`

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Evaluate the following: cos^(-1)(cos((7pi)/6))
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Evaluate the following: cos^(-1)(cos((2pi)/3))
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Evaluate the following: sin^(-1)(sin 10)
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Evaluate the following: cos^(-1)(cos10) (ii) tan^(-1){tan(-6)}
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Evaluate the following: cos^(-1)(cos4)
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Prove that sec^2(tan^(-1)2)+cos e c^2(cot^(-1)3)=15
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Prove that: tan^(-1)x+tan^(-1)(1/x)=pi/2
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Prove that tan^-1(1/7)+tan^-1(1/13)=tan^-1(2/9)
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Prove that tan ^(-1) . 1/5 + tan^(-1) . 1/7 + tan ^(-1) . 1/8 = pi/4
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Prove that: sin^-1 (12/13)+cos^-1(4/5)+tan^-1(63/16)=pi
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Prove that: cos^(-1)(12/13)+sin^(-1)(3/5)=sin^(-1)(56/65)
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If x=tan^(- 1)(1)+cos^(- 1)(-1/2)+sin^(- 1)(-1/2) and y=cos[1/2cos...
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Evaluate: tan{2tan^(-1)(1/5)-pi/4}
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Evaluate: tan{1/2cos^(-1)(sqrt5/3)}
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Prove that: 2tan^(-1)1/2+tan^(-1)1/7=tan^(-1)(31)/(17)
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Prove that: tan^(-1)sqrt(x)=1/2cos^(-1)((1-x)/(1+x)), x in [0,1]
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Prove that :2tan^(-1)(1/5)+sec^(-1)((5sqrt(2))/7)+2tan^(-1)\ 1/8=pi/4
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The equation 2cos^(-1)x+sin^(-1)x=(11pi)/6 has a. no solution b. only...
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