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IPMAT/Algebra
Academic discussion and doubt solving for: Progression & Series, Inequalities, Linear Equation, Functions, Modulus, Minima & Maxima, Polynomials, Identities, Indices
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How to ask good doubts?
Point out the exact step you're stuck on and let us know what you've already tried. This helps others understand your thinking and guide you better.
I thought of doing so, but bhaiya whenever I ask a doubt here it is replied with a whole ahh solution and not what I actually asked for. Also, I did not understand the solution for this qstion except the meaning of 'period'. So I thought this time it would be good to understand the whole from the forum. (PS - I suck at trigono)
here's the solution though