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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- Aug 6th 2012, 05:08 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. - Aug 6th 2012, 05:14 PMrichard1234Re: Quadratic Equation: please sove
Rewrite as and divide everything by 2:

Apparently this factors to

.

Solve for x. - Aug 6th 2012, 11:22 PMlouisejaneRe: Quadratic Equation: please sove
Thanks for it Richard. I appreciate it but I still don't get it. Can you explain it further?

- Aug 6th 2012, 11:50 PMrichard1234Re: Quadratic Equation: please sove
What step don't you get?

- Aug 6th 2012, 11:54 PMlouisejaneRe: Quadratic Equation: please sove
In the substitution.

- Aug 7th 2012, 12:05 AMrichard1234Re: Quadratic Equation: please sove
Trig identity, for all .

- Aug 7th 2012, 12:13 AMlouisejaneRe: Quadratic Equation: please sove
Thanks!