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what does the expression equal to? `[cos 10+sin 40]/[sin 10+cos 40]`
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Sorry, I mean cos 10 + sin 40 / sin 10 + cos 40
Posted by rhieyuz707 on March 6, 2012 at 12:34 AM (Answer #1)
High School Teacher
Best answer as selected by question asker.
Apparently we don't want to use decimal approximation from a calculator, we need to start by using some trig identities to simplify.
``I am going to multiply both numerator and denominator by
cos15-sin15, we get
Posted by rcmath on March 6, 2012 at 1:36 AM (Answer #2)
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