Question

If sinA , cosA and tanA is in G.P. then find value of cos^{3} A+cos^{2}A

Answer 1

Answer:

Step-by-step explanation:

As sin A,cos A,tan A are in G.P,

∴ cos² A = sin A tan A,

⇒cos³ A-sin² A=0,

⇒ cos³ A-(1-cos²A)=0,

⇒cos³ A+ cos² A =1,

Hope it helps you!