Math, asked by sanjotasankappagol, 5 months ago

1+cos A / 1-cos A =(cosec A + cot A ) ²

Answers

Answered by Nihar1729

1

Answer:

1+cosA/1-cosA=(cosecA+cotA)²

Step-by-step explanation:

(1+cosA)(1+cosA)/(1-cosA)(1+cosA)
(1+cosA)²/1-cos²A
1+cos²A+2cosA/sin²A
cosec²A+cot²A+2cosecAcotA
(cosecA+cotA)²{proved}
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