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Use identities to find the value of each expression. 1) If sin , find cos ( 2) If tan ( ) , find cot (
Answers to Verifying Identities. sin x + csc x. 1) csc x. Decompose into sine and cosine. 1. +. sin x sin x. Simplify. 1.
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Answers to Worksheet Review Trig. Identities (basic) (ID: 1) tan2 x - sec2 x. 1) cos x. Use tan2 x + 1 = sec2 x. 1. - cos x. 1. Use sec x = cos x. -sec x sec x.
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Exam 3 practice worksheet You do not need to turn in this worksheet! 1 Verifying Trig IDs (Section 5.2 of the book) There isn’t an algorithm for verifying trig identities, so these problems take creativity, intuition, and persis-tence. There are a few guiding principles, however: 1.1 Start problems o by picking the low-hanging fruit
Verifying Trig Identities. Date________________ Period____. Verify each identity. Work on the left side only. Give a reason for each step. 1) cot2 x - tan2 x = csc2 x - sec2 x. 2) sin xsec x = tan x. cos2 x sin x. 3) = csc x sec2 x.
