20. A= sin 0+ cos 0, then for all values of 0 as 1) 0...

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20. A= sin° 0+ cos" 0, then for all values of 0 as 1) 0<A<1 2) 1<2A<3 3) A21 4) 0<A<- 20. A= sin° 0+ cos" 0, then for all values of 0 as 1) 0<A<1 2) 1<2A<3 3) A21 4) 0<A<-