2007-08-29 04:52:31 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
sin θ = 3 / 5
θ = 143.1°
2 θ = 286.2°
tan 2 θ = tan 286.2° = - 3.442
2007-09-01 23:56:03 · answer #1 · answered by Como 7 · 1⤊ 0⤋
the least puzzling thank you to try this's to allure to a ideal triangle in quadrant a million (considering the fact that 0
2016-11-13 19:33:31
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answer #2
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answered by ? 4
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sin Θ = (3/5)
==> take the arcsin of both sides to get:
arcsin (sin Θ) = arcsin (3/5)
==> now simplify the LHS to get:
Θ = arcsin (3/5)
==> multiply both sides by 2 to get:
2Θ = 2*arcsin(3/5)
now use a calculator to get:
tan (2*arcsin(3/5))
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I don't think there's any way to do this without a calculator. Despite the fact that the triangle in the second quadrant is a 3-4-5 triangle, the angle of that triangle isn't anything simple.
2007-08-29 06:38:08 · answer #3 · answered by grompfet 5 · 1⤊ 0⤋
3.42857
2007-08-29 05:04:24 · answer #4 · answered by chasrmck 6 · 1⤊ 0⤋