Question

IN Triangle ABC with sides a,b,c value of cosecA(sinBcosC+cosBsinC) ?

Answer 1

`1.`

Explanation:

We have,

`cscA(sinBcosC+cosBsinC),`

`=cscAsin(B+C),`

`=cscAsin(pi-A)..."[as, in "Delta ABC, A+B+C=pi],`

`=cscA*sinA,`

`=1.`