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Mathematics 16 Online
OpenStudy (anonymous):

use the angle sum or difference identity to find the exact value of tan 255 tan(225+30) I need some help with this one

OpenStudy (cwrw238):

use the identity tan (a + b) = tan a + tan b -------------- 1 - tan a tan b

OpenStudy (cwrw238):

just a sec while a check that is correct

OpenStudy (cwrw238):

yes thats ok

OpenStudy (cwrw238):

you can find the exact values of tan 30 and tan 225 from the standard triangles:- |dw:1427878809853:dw|

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