PhysChemTutor's answer to Priya's Secondary 4 A Maths Singapore question.
Hi. thank you for your help
But I I don’t understand how do u get from the third step to the sin4x/sin2x
Is it u have to use some rule??
But I I don’t understand how do u get from the third step to the sin4x/sin2x
Is it u have to use some rule??
sin (a+b) =
sin (a - b) =
sin (a - b) =
Oh ok thank you
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