sina+coseca=2 then sin^2a +cosec^2a=
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Hi____________
______________§__
hope u know
coseca=1/sina
(a+b)^2=a^2+b^2+2ab
____________________
now comes to ur question
sina+coseca=2
square both side
(sina+coseca)^2=2^2
sin^2a +cosec^2a+2sina*coseca=4
sin^2a+cosec^2a+2=4
hence
sin^2a+cosec^2a=4-2=2
ur answer is 2
hope it help
______________§__
hope u know
coseca=1/sina
(a+b)^2=a^2+b^2+2ab
____________________
now comes to ur question
sina+coseca=2
square both side
(sina+coseca)^2=2^2
sin^2a +cosec^2a+2sina*coseca=4
sin^2a+cosec^2a+2=4
hence
sin^2a+cosec^2a=4-2=2
ur answer is 2
hope it help
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