Reciprocal trig functions (csc, sec, cot)

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Lesson Plan →Objectives, pacing and practice, built from this lesson's brief.
Guided Notes →One page your students fill in and keep.
Exit Ticket →Three items at the end of class. No student accounts.
Re-teach →After an exit ticket: who missed what, and what to do tomorrow.
Homework →Assign practice; it grades itself.

F 706. Use trigonometric concepts and basic identities to solve problems G 509. Express the sine, cosine, and tangent of an angle in a right triangle as a ratio of given side lengths

F 706. Use trigonometric concepts and basic identities to solve problems
G 509. Express the sine, cosine, and tangent of an angle in a right triangle as a ratio of given side lengths

What you'll learn

Define the three reciprocal trigonometric functions and state their relationship to sin, cos, and tan
Express csc, sec, and cot as ratios of right-triangle sides (hyp/opp, hyp/adj, adj/opp)
Evaluate csc, sec, and cot for standard angles (30, 45, 60 degrees), rationalizing denominators as needed
Simplify expressions and verify identities involving reciprocal trig functions
Solve ACT-format multiple-choice problems involving reciprocal trig functions

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Reciprocal trig functions

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