Thread: Simultaneous equation with cos or sin

Find P and Q





what i did was find P which =



then sub that in the first equation.

so it would be

but that's not going to find Q

Any help is appreciated!

Originally Posted by BabyMilo

Find P and Q





what i did was find P which =



then sub that in the first equation.

try substituting it into the 2nd equation instead

...

lol i realise that but still cant do it really!

Originally Posted by BabyMilo

lol i realise that but still cant do it really!

why not?



multiply by to clear the fraction ...



finish up by isolating

thanks! although worked it out before your post!
thanks though! hehe!