1
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The question given was - solve all the equations that are possible to solve without a calculator. (This is a part of it) Please try to solve this question (obviously without a calculator) if it's possible. :) thanks in advance.

All values are in degrees

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  • $\begingroup$ We are mathematicians, how do you even know the value exists ;-) $\endgroup$ – dcs24 May 6 '14 at 11:24
  • $\begingroup$ Using calculator the answer is 1. I am not able to reach it. :| $\endgroup$ – Harshal Gajjar May 6 '14 at 11:27
  • $\begingroup$ Hence, the answer is 1. $\endgroup$ – evil999man May 6 '14 at 11:27
  • $\begingroup$ (-1) for that, Awesome. $\endgroup$ – Harshal Gajjar May 6 '14 at 11:28
  • $\begingroup$ Hint: What is $\tan 225^{\circ}$, and use the addition formula for tan. $\endgroup$ – Macavity May 6 '14 at 11:29
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Hint: $\tan(\alpha + \beta)=\dfrac{\tan(\alpha)+\tan(\beta)}{1-\tan(\alpha)\tan(\beta)}$ and $\tan(225^\circ)=1$.

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  • $\begingroup$ Thank you. :) The answer is 1. $\endgroup$ – Harshal Gajjar May 6 '14 at 11:43

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