MHB SE Class 10 Maths - Rational or Irrational Numbers: $\cos(1^0)$ and $\tan(1^0)$

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The discussion centers on whether $\cos(1^\circ)$ and $\tan(1^\circ)$ are rational or irrational numbers. Participants assert that both values are irrational. A proof supporting this claim is referenced in the thread. The focus remains on the mathematical properties of these trigonometric functions evaluated at 1 degree. Overall, the conclusion is that both $\cos(1^\circ)$ and $\tan(1^\circ)$ are irrational numbers.
juantheron
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$\cos(1^0)$ and $\tan(1^0)$ are Rational or Irrational no.

Where angle are in Degree

help required
 
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jacks said:
$\cos(1^0)$ and $\tan(1^0)$ are Rational or Irrational no.

Where angle are in Degree

help required

Irrational, the proof can be found >>here<<

CB
 
I have been insisting to my statistics students that for probabilities, the rule is the number of significant figures is the number of digits past the leading zeros or leading nines. For example to give 4 significant figures for a probability: 0.000001234 and 0.99999991234 are the correct number of decimal places. That way the complementary probability can also be given to the same significant figures ( 0.999998766 and 0.00000008766 respectively). More generally if you have a value that...

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