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azamat
3 years ago
11

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

Mathematics
1 answer:
Sonja [21]3 years ago
4 0
          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
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Employ a standard trick used in proving the chain rule:

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