what does the expression equal to? `[cos 10+sin 40]/[sin 10+cos 40]`  



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rhieyuz707's profile pic

Posted on (Answer #1)

Sorry, I mean cos 10 + sin 40 / sin 10 + cos 40

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rcmath's profile pic

Posted on (Answer #2)

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






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