Question

if tan alpha and 10 beta beta roots of x square - 3 x + q is equals to zero then find cos 2 alpha + beta​

Answer 1

Step-by-step explanation:

x2+px+2=0

tanα and tanβ are roots of equation

tanα+tanβ=−p

tanαtanβ=q

tan(α+β)=1−tanαtanβtanα+tanβ=1−q−p=q−xp

tan(α+β)=q−1p.

Answer 2

Answer:

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