Algebra 2 - Find the Double Angle of Tangent To a Triangle, Sin v = 4/5

The video tutorial explains how to find the tangent of 2V given the sine of V. It starts by identifying the quadrant for the angle and drawing a right triangle. Using Pythagorean triples, the adjacent side is calculated, allowing the tangent of V to be determined. The tutorial then simplifies the tangent of 2V using trigonometric formulas, concluding with the final answer.

How can you find the adjacent side using the Pythagorean theorem?

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What is the final answer for the tangent calculation as derived in the text?

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