{ 3. If }\operatorname{tan}θ=y\operatorname{tan}ϕ and }\operatorname{sin}θ=x\operatorname{sin}ϕ , then the value of }}{\operatorname{cos}^2θ is }\lbrack x≠ y\rbrack

{ 3. If }\operatorname{tan}θ=y\operatorname{tan}ϕ and }\operatorname

1.	{ 3. If }\operatorname{tan}θ=y\operatorname{tan}ϕ and }\operatorname{sin}θ=x\operatorname{sin}ϕ , then the value of }}{\operatorname{cos}^2θ is }\lbrack x≠ y\rbrack
Answer» { 3. If }\operatorname{tan}θ=y\operatorname{tan}ϕ and }\operatorname{sin}θ=x\operatorname{sin}ϕ , then the value of }}{\operatorname{cos}^2θ is }\lbrack x≠ y\rbrack