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If sin θ = 2 over 7 and tan θ > 0, what is the value of cos θ?

Kyle Mckinney

in Mathematics

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James Washington on July 13, 2018

Sin θ = 2 / 7tan θ > 0cos θ = ?sin θ = opposite / hypotenusetan θ = opposite / adjacentcos θ = adjacent / hypotenuseshort leg = opposite = 2hypotenuse = 7long leg = adjacent = ?adjacent = √(72 - 22)adjacent = √(49 - 4)adjacent = √45adjacent = √9 * 5adjacent = 3 √5cos θ = adjacent / hypotenusecos θ = 3√5 / 7


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