Beta, if adding angles worked like adding potatoes, life would be so simple! But in maths, sin(A+B) has its own *sutra*—sinAcosB + cosAsinB. I learned this by heart just last week, yet my *chakla-belan* still slip from my hands separately; only together do they make a perfect *roti*. So how can two separate 'sins' simply combine? They need the right mixing, like flour and water.
#exams#study
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