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Math·Geometry and Trigonometry·Right triangles and trigonometry
hardIn the figure, AD and BC intersect at point D. The measure of ∠ABD is w∘, the measure of ∠CAD is z∘, and AD=143. If cosw∘=419, what is the value of tanz∘?
1
40/9
2
4.444
3
4.44