maggiemaeswerve
maggiemaeswerve maggiemaeswerve
  • 22-05-2018
  • Mathematics
contestada

If sin θ = 7 over 25, use the Pythagorean Identity to find cos θ. cos θ = ± 17 over 24 cos θ = ± 17 over 25 cos θ = ± 24 over 25 cos θ = ± 24 over 7

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LammettHash
LammettHash LammettHash
  • 29-05-2018
[tex]\sin^2\theta+\cos^2\theta=1[/tex]

[tex]\implies\cos^2\theta=1-\left(\dfrac7{25}\right)^2=\dfrac{576}{625}\implies\cos\theta=\pm\dfrac{24}{25}[/tex]
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