Question

If if alpha and beta are the zeros of the polynomial x square - 8 x + 12 find the value of a + b -3 ab .

Answer 1

Answer:

So, cos(A+B)=1/2

cos(A+B)=cos 60°

so, A+B=60

Again, Sin(A-B)=Sin 30°

A-B=30

A=45° and B=15°

Step-by-step explanation:

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