Answer: this is a INVERSE choice C
The solution for proving the identity is as follows:
sin(2A) = sin(A + A)
As sin(a + b) = sinacosb + sinbcosa,
<span>sin(A + A) = sinAcosA + sinAcosA
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<span>Therefore, sin(2A) = 2sinAcosA
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X/4 + b/4
i need some values tho
24/.30 is how you would get your answer and 80
