Have you ever wondered how to compute expressions like cos(arctan(3/2)) or tan(arcsec(4/3)) without a calculator? In this video, I’ll walk you through six examples, showing you how to use geometry on right triangles to evaluate these types of composite trigonometric expressions.
Examples covered in this video:
cos(arctan(3/2))
tan(arcsec(4/3))
cot(arccsc(5))
cos(arctan(−1/4))
tan(arcsin(−1/4))
csc(arcsec(−9/5))
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