Asked by Katie
How would you solve tan(-335) without using a calculator? I got it to tan(25) but that's not one of the ones on our chart, and I'd use a sum or difference identity but we never learned one for tangent, if one exists.
Answers
Answered by
bobpursley
I don't see a solution without a calculator.
Answered by
drwls
Assuming the angles are in degrees,
tan (-335) = -tan 25
Use tan (a + b) = (tana + tanb)/[1 - (tana*tanb)]
I don't see a suitable combination of a and b, either.
tan (-335) = -tan 25
Use tan (a + b) = (tana + tanb)/[1 - (tana*tanb)]
I don't see a suitable combination of a and b, either.
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