Find \sin C, to two decimal places.
By the Pythagorean Theorem, AB = sqrt(16,000,000 – 9,000,000)
AB = sqrt(7,000,000)
sin C = sqrt(7,000,000) / 4,000 ≈ 2,645.75 / 4,000 ≈ 0.66
.
AB = sqrt [ (4K)^2 - (3K)^2 ] = K sqrt 7
sin C = K sqrt 7 / 4K = sqrt (7) / 4 = 0.66
