Solve the quadratic equation of x

(sin(2a)).x^{2}- 2.x.(sin(a)+cos(a)) +2 =0

Kindly explain your answer.

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- August 6th 2012, 04:08 PMlouisejaneQuadratic Equation: please sove
Solve the quadratic equation of x

(sin(2a)).x^{2}- 2.x.(sin(a)+cos(a)) +2 =0

Kindly explain your answer. - August 6th 2012, 04:14 PMrichard1234Re: Quadratic Equation: please sove
Rewrite as and divide everything by 2:

Apparently this factors to

.

Solve for x. - August 6th 2012, 10:22 PMlouisejaneRe: Quadratic Equation: please sove
Thanks for it Richard. I appreciate it but I still don't get it. Can you explain it further?

- August 6th 2012, 10:50 PMrichard1234Re: Quadratic Equation: please sove
What step don't you get?

- August 6th 2012, 10:54 PMlouisejaneRe: Quadratic Equation: please sove
In the substitution.

- August 6th 2012, 11:05 PMrichard1234Re: Quadratic Equation: please sove
Trig identity, for all .

- August 6th 2012, 11:13 PMlouisejaneRe: Quadratic Equation: please sove
Thanks!