yangtheary

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These are questions asked by yangtheary

Let $\triangle ABC$ be an equilateral triangle and $\angle BAC$=$20^\circ$, take point $D$ is on $AC$ such that $AD$ $=$ $BC$. Find $\angle ABD$= ?

Determine the sert of point  Z in complex plane isuch that  l2z-il=Im(z+1-i)

BAC  and angle OAC

we have positive number from 1 to 1000. how many time we write number 3?

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