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

mini , 9 Years ago
Grade 10
anser 1 Answers
Lab Bhattacharjee

Last Activity: 9 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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