If then let us show that, tan α + sec α = 1.5.

Let us eliminate ‘θ’ from the relations :

x = 2 sin θ, y = 3 cos θ

Let us eliminate ‘θ’ from the relations :

5x = 3 sec θ, y = 3 tan θ

If then let us determine the values of both sinA and secA.

If then let us show that, x sin θ = y cos θ.