If cos theta = -4/7 what are the values of sin theta and tan theta?

Question

asked Oct 23, 2017 92.5k views

1 Answer

Anton Tupy · Answer 1 · 2017-10-27T11:44:55+0000

cosθ = ⁻⁴/₇
cos⁻¹(cosθ) = cos⁻¹(⁻⁴/₇)
θ = 124.8499046

sinθ = sin(124.8499046) = 0.820651806
tanθ = tan(124.8499046) = -1.436140661