Trigonometric equation question
I can't remember how to do these.
I need to do question 9D. If anyone could help it would be greatly appreciated. I've been trying for ages but I'm just not sure what to do.
I need to do question 9D. If anyone could help it would be greatly appreciated. I've been trying for ages but I'm just not sure what to do.
What do I do now?
Sin^2(x/2)=4sin(x/2)cos(x/2)
Sin^2(x/2)=4sin(x/2)cos(x/2)
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