if sina cosa are the roots of the equation px2 + qx + r=0 then- p2-q2 + 2pr=0 - Maths - Complex Numbers and Quadratic Equations

Question

if sina & cosa are the roots of the equation px2 + qx + r=0
then-
p2-q2 + 2pr=0 prove

Gopal Mohanty · Accepted Answer

Hi!
Here is the answer to your question
It is given that sin α and cos α are the roots of
the quadratic equation px2 + qx + r
= 0
<img height="364" width="603" src=
"https://s3mn%20mnimgs%20com/img/shared/userimages/mn_images/image/04-Apr-2011-6%20png"
alt="">
Hence proved
Hope! This will helpful to you
Cheers!!!

if sina & cosa are the roots of the equation px2 + qx + r=0 then- p2-q2 + 2pr=0 prove

if sina & cosa are the roots of the equation px2 + qx + r=0 then-

p2-q2 + 2pr=0 prove