Important Half Angle Formula | NDA MATHS | Target Nda 1 - 2024 | NDA EXAMS
Автор: Brigadier Defence Academy
Загружено: 2023-12-22
Просмотров: 215
The formula for half-angle identities is as below: \[\text{Sine of a Half Angle} : sin(\frac{a}{2}) = \pm \sqrt{\frac{(1 - cos a)}{2}}\] \[\text{Cosine of a Half Angle}: cos(\frac{a}{2}) = \pm \sqrt{\frac{(1+cosa)}{2}}\] \[\text{Tangent of a Half Angle}: tan(\frac{a}{2}) = \frac{1 - cosa}{sina} = \frac{sina}{1+cosa}\]
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