Math, asked by sandhyarani67888, 7 months ago

cot A/2= siA /1-cosA

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Answered by priyel

Step-by-step explanation:

$\large\bf \frac{cotA}{2} = \frac{sinA}{1-cosA} \\ \\ \tt \mapsto2sinA = \frac{sinA}{cosA} \times (1 - cos A) \\ \\ \tt \mapsto2sinAcosA = sinA - sinAcosA \\ \\ \tt \mapsto3sinAcosA = sinA \\ \\ \tt \mapsto \: sinA = 3cosA - 1$

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cot A/2= siA /1-cosA​

Answers

Step-by-step explanation:

cot A/2= siA /1-cosA