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

up vote 5 down vote accepted

Hint: $\tan(\alpha + \beta)=\dfrac{\tan(\alpha)+\tan(\beta)}{1-\tan(\alpha)\tan(\beta)}$ and $\tan(225^\circ)=1$.

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Thank you. :) The answer is 1. –  Harshal Gajjar May 6 at 11:43
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