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