1.

SecA+tanA=x then prove sinA =x sqare -1divided by x sqare+1

Answer» SecA+tanA=X; secA-tanA=1/x adding we get 2secA=x+1/x>>>>secA=x square+1 divide 2x that is cosA=2x/x square+1 i.e sinA=√1-cosA^


Discussion

No Comment Found