Homework Help: pre calc

Posted by Steven on Wednesday, January 4, 2012 at 10:52pm.

evaluate the trigonometric function of the given quadrantal angle.

tan 1440°

Evaluate without using ratios in reference triangle.

sec 3π/4

pre calc - Steve, Thursday, January 5, 2012 at 4:35am
tan 1440° = tan 1440-4(360) = tan 1440-1440 = tan 0° = 0

sec 3π/4 = -sec π/4 = -√2

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