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If Sin^2A+3CosA=2 Find the value of Cos^3A+Sec^3A.Please Help Me to do the problem

If Sin^2A+3CosA=2 Find the value of
 
Cos^3A+Sec^3A.Please Help Me to do the problem

Grade:10

1 Answers

Lab Bhattacharjee
121 Points
8 years ago
HINT:
 
Replace sin^2A with 1-cos^2A to form a Quadratic Eqaution in cosA
 
Use the fact: -1
 

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