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ALGEBRA 2 HELP PLEASE!!!
What is the value of cosθ, given that sinθ=−710 and cosθ>0? Simplify radicals and rationalize the denominator, if necessary. Enter your answer in the box.

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Did you find the answer? I am stuck on this question too.
hannahrosej
I'm not sure if it is right, I'm taking the final right now but i think the answer is : [tex] \frac{ \sqrt{51} }{10} [/tex]

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