Question

if sin x + cosec x=2,find the value of sin ^19 x + cosec^20 x =?​

Answer 1

Answer:

2

Step-by-step explanation:

sin x+1/sin x=2

sin^2 x+1 whole divided by sin x=2

sin^2x+1=2sin x

sin^2x-2sinx+1=0

(sin x-1) ^2=0

sin x-1=0

sin x=1

also cosec x=1

sin^19 x+cosec^20 x

(1)^19+(1)^20

1+1

2