SOLUTION: sin5A/sinA-cos5A/cosA=4cos2A prove that...

Algebra.Com
Question 1140218: sin5A/sinA-cos5A/cosA=4cos2A
prove that...
Answer by Edwin McCravy(20060)   (Show Source): You can put this solution on YOUR website!


Work with only the left side:



















Edwin
RELATED QUESTIONS

sin5A/sinA+cos5A/cosA=a+bcos4A (answered by ikleyn,Edwin McCravy)
Prove that (sin3A + sinA)sinA + (cosA - cosA)cosA =... (answered by MathLover1)
PROVE THAT sinA/1+cosA +... (answered by AAfter Search)
Prove that: ((cos2A)/(cosA+sinA)^3) =... (answered by Cromlix)
Prove that (sin3A + sinA)sinA + (cos3A - cosA)cosA =... (answered by MathLover1)
Prove that... (answered by MathLover1)
using trigonometric fundamental identities prove that... (answered by lwsshak3)
Prove that (sin³A + cos³A)/(sinA + cosA) + (sin³A - cos³A)/(sinA - cosA) =... (answered by MathLover1)
Prove... (answered by Alan3354)