Observe the following Statements:1. In `DeltaABC, bos^2(C/2) +c cos^2(B/2) =s` II. In `DeltaABC, cot(A/2)=(b+c)/a=>B=90^@` Which of the following is correct?

Observe the following Statements: 1 .In Delta ABC,bos^(2)((C)/(2))+c cos^(2)((B)/(2))=s II.In Delta ABC,cot((A)/(2))=(b+c)/(a)rArr B=90^(@) Which of the following is correct?

Observe the following statements: (I) In !ABC,bcos^(2)C/2+ccos^(2)B/2=s , (II) In !ABCcotA/2=(b+c)/2rArrB=90^(@) Which of the following is correct?

Observe the following statements: (I) In !ABC,bcos^(2)C/2+ccos^(2)B/2=s , (II) In !ABCcotA/2=(b+c)/2rArrB=90^(@) Which of the following is correct?

In a DeltaABC, b cos^(2) (C/2) + c cos^(2) (B/2) is equal to

In a DeltaABC, b cos^(2) C/2 + c cos^(2) B/2 is equal to

In any DeltaABC, sum (b - c) cot A/2 =

In any DeltaABC, sum (b - c) cot A/2 =

In a DeltaABC , 2A(cot B + cot C)=