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Use identities to find the value of each expression. 1) If sin , find cos ( 2) If tan ( ) , find cot (
Create your own worksheets like this one with Infinite Precalculus. 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.
8 Μαΐ 2013 · Lecture Notes Trigonometric Identities 1 page 4 6. cos2 x = cscxcosx tanx+cotx Solution: We will start with the right-hand side. We will re-write everything in terms of sinx and cosx and simplify. We will again run into the Pythagorean identity, sin2 x+cos2 x = 1. RHS = cscxcosx tanx+cotx = 1 sinx cosx sinx cosx + cosx sinx = 1 sinx cosx 1 sin2 ...
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.
