Sine Calculator, sin

sin77 Step by step video & image solution for প্রমাণ করো যে sin5^@- sin67^@+ sin77^@. Note that sin77° is periodic: sin (77° + n × 360°) = sin 77 degrees, n$hspace{5px} in hspace{5px} mathbb{Z}$. There are more formulas for the double angle (2 × 77°), half

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