Math, asked by Hrishikeshkota, 1 year ago

If sin a+cosec a=2 then value of sin^20a+cosec^20 a =

Answers

Answered by KillerShock

6

sina + 1/sina =2
sin^2a + 1 -2sina = 0
(sina -1)^2 = 0
sina = 1
coseca =1
sin^20 + cosec^20 =2

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