Math, asked by reena2610patel, 11 months ago

1÷1+cos A +1÷1-Cos A =2Cosec×cosec A​

Answers

Answered by dhanalakshmis2524
1

Answer:

Step-by-step explanation:

1 / 1+cosA    + 1 / 1 - cosA  = ( 1 -cosA + 1+ cosA ) /  (1+cosA) (1-cosA)

                                        =    2 / 1- cos²A

                                        =  2 / sin²A

                                        = 2  cosec²A

                                        = 2 cosecA x cosecA

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