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OpenStudy (jskhupmang):
Hi I really need help. How to solve +-(√1+cos20°)÷2 . I have the answer. Help will medal and follow u if you show me the work.
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OpenStudy (anonymous):
what type of math is this?
OpenStudy (jskhupmang):
algebra2 but also pre calc
OpenStudy (jskhupmang):
nevermind i got it now its Cos(x/2)=cos(20°/2) ans: cos10°
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