Hi I really do not know how to do this.
Write sin2a-cos2ai in modulus argument form
I was thinking of changing sin2a to cos(pi/2 - 2a)..
Will really appreciate the help! Thanks,
From what I've learnt, modulus-argument form is the polar form where it is rcis(thetha) where r is positive.
re^i(thetha) is exponential form for me.
The answer of this question is in cis form, not exponential form.