Trigonometric Cofunction Identities Worksheets
Cos, cot, and cosec are cofunctions of sin, tan and sec, hence they are prefixed with "co". Highlighted here is the relationship between the basic trig functions whose arguments together make complementary angles. Learn the cofunction identities in degrees as well as radians from the trigonometric identities chart and practice exercises like solving and evaluating trigonometric functions.
Tackle these two-part worksheets featuring exercises to express a trigonometric function as an acute angle less than 45o or π/4 in Part A and greater than 45o or π/4 in Part B.
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