- If tanb=2, how can I evaluate and simplify tan(pi/3+b)?

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Negative Feedback Physics...
How does voltage at inverting input equal to voltage at non-inverting input assuming op-amp is not saturated?? AMONG VERTEBRATES, THE UNIQUE FEATURE OF LAMPREYS AND HAGFISH IS? Consider the equation z=x^2-xy. For what values of x and y does z=0? What would happen to a cell if there was no Golgi apparatus? A + ar + ar2 + .......
the sum of the first two terms is 24 and the sum to infinity is 27. Show that r = +,- 3?