maggiemaeswerve maggiemaeswerve

22-05-2018
Mathematics

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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

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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