1.

A : sin 40^@ - sin 80^(@) + sin 160^(@) = 0 R :sin theta + sin(60^(@) - theta ) - sin (60^(@) + theta ) =0

Answer»

A is true , R is true and R is CORRECT EXPLANATION of A
A is true , R is TRUEAND R is not correct explanation of A
A is true , R is false
A is false , R is true

Answer :A


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