![]() ![]() ![]() Simplify 2 cot 2 x Use cot 2 x 1 = csc 2 x csc 2 x - 1 ■ 2 Use sin x cos x = 1 Use csc x = sin x Sin 2 x cos 2 x ) ■ Decompose into sine and cosine Simplify Use sin 2 x cos 2 x = 1 2 cos x Tan 2 x 3) tan x × (tan x cot x) ( sin x sin x cos x Tan x sec x tan 2 x Use tan 2 x 1 = sec 2 x cos 2 xcot 2 x Answers to Practice 7a#2 Proving Trig IdentitiesĬos x Use sec x = cos x 2 Use tan 2 x 1 = sec 2 x tan x 1 Tan 2 xcot 2 x Worksheet by Kuta Software LLC -3- ©w c2^0Z2a1J RKiuMt[ax sS`oofftCwma_rOew NLoLWCV.x F fATlJlR HrqiMghh`t_st \ruelsDeerHviecdk.k G NMiaSdCep PwniItFhs gIzn`faiOnhiCtJe\ cPBrGecczaKllcJuBlxuJsu. Tan x 5) csc 2 xcos 2 x = csc 2 x - 1 6) tan x - cot xsec 2 x = -csc xcos x Worksheet by Kuta Software LLC -2- ©V q2s0c2v1k cKouBtOaB MSuoCfitmwwaGrceP ML_LZC].b D IAIlDlS TrgiXgHhktks\ brgepsWearKvieGdX.` R KMQabdCei GwyiWtqh] oIonIfSi]n]iItpeA jPFrkeXcYajlEckuOl. Practice 7a#2 Proving Trig Identities Date_ Period_ Verify each identity.ġ) sin 2 xsec 2 x = sec 2 x - 1 3) tan x × (tan x cot x) = 2) cot 2 xĬos 2 x Worksheet by Kuta Software LLC -1- ©a z2P0h2j1x uKgultea` uSKoJfvtAwraTrVeY OLeLeCz.x L oAjltlF drYiRgRhWtXsd grbeasbeGrZvTeUdC.L J ^MGaydoem TweiStbhC TIBnOfPidnsihtKeP RPVrXeQcUaAlDcpuElKu_sV. Unformatted text preview: Precalculus Name_ ©l K2I0c2I1A IKYumtRa] FSBoEfLtGwiaRrCeA XLMLfCl.B M MAxlhlD \rCi]gqh`tvsv rrgeasAeLrevTeRdu. ![]()
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