exam Maths Puzzle Numerical Ability

using the unit circle, find the value of the trigonometric function:
tan pi over 6

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exam Other Question

Factor x^2-7x+12 Hello:

Thank you so much for offering the free tutoring.

My exercise is:

x^2+4x+4=7.

I have gotten to:

x^2+4x+4=7=0
x^2+4x+(-3)=0
now I am stuck.

Thank you for your help.