1.

1.If tan x=n tan y and sin x=m sin y then prove that (m^2 - 1 )/ (n^2 - 1)=cos^2 x ?2.If x sin^3 A + y cos^3 A=sinAcosA and x sinA=y cosA.Prove that x^2+y^2=1 ?

Answer» 1.If tan x=n tan y and sin x=m sin y then prove that (m^2 - 1 )/ (n^2 - 1)=cos^2 x ?
2.If x sin^3 A + y cos^3 A=sinAcosA and x sinA=y cosA.Prove that x^2+y^2=1 ?


Discussion

No Comment Found