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Use identities to find the value of each expression. 1) If sin , find cos ( 2) If tan ( ) , find cot (
Use the angle difference identity to find the exact value of each. Use the angle sum or difference identity to find the exact value of each. Create your own worksheets like this one with Infinite Algebra 2. Free trial available at KutaSoftware.com.
Create your own worksheets like this one with Infinite Precalculus. Free trial available at KutaSoftware.com
Answers to Verifying Identities. sin x + csc x. 1) csc x. Decompose into sine and cosine. 1. +. sin x sin x. Simplify. 1.
Kuta Software - Infinite Algebra 2 Name_____ Double- and Half-Angle Identities Date________________ Period____ Use a double-angle identity to find the exact value of each expression.
Worksheet by Kuta Software LLC-3-Answers to Worksheet Review Trig. Identities (basic) (ID: 1) 1) tan2x - sec2x cosx Use tan2x + 1 = sec2x-1 cosx Use secx = 1 cosx-secx 2) tanx + secxDecompose into sine and cosine sinx cosx + 1 cosx Simplify 1 + sinx cosx 3) secx sin3x Use cscx = 1 sinx csc3xsecxUse secx = 1 cosx csc3x cosx
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. cos2 x - sin x. 4) 1 - csc xtan2 x = cos2 x. 1. 5) = csc2 x - 1 tan2 x. 6) -cos xcsc x = -cot x.
