solve 11sin^2 y =13-3sin^2 y for y, where y is greater then 0 degrees but less than 360. how many angle satify this equation?

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- May 26th 2005, 08:23 PMkelseyhow can i solve this trig question?
solve 11sin^2 y =13-3sin^2 y for y, where y is greater then 0 degrees but less than 360. how many angle satify this equation?

- May 26th 2005, 10:57 PMpaultwang
You can perceive this as a quadratic equation $\displaystyle 11 z^2 = 13 - 3 z^2 $ where $\displaystyle z = sin(y) $, solve this eqn. (You'll get two answers), and solve for y for each answer.

- May 27th 2005, 05:40 AMkelseythanks
thanks so much for the help

i am doing moduals and there is no other way to get this much help