Question

prove that: sin3A=3sinA-4sin3A
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Answer 1

Answer:

please rectify the question is itself ... it can't be possible...

how 5sin3A = 3sinA

it's sin(3A)= 3sinA- 4(sin^3( A))

Step-by-step explanation:

see explanation in attachment...

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.hope u get it ... please rate it as a brainliest...