Final Exam Review Solutions.doc - MTH 123 Final Exam Review...

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MTH 123Final Exam Review Solutions1.In the quadrant where cosines are negative and tangents are negative, list the commonarc values, corresponding angle measures, and the exact valuesof the sine and cosine.common arcanglesinecosine2.Prove the following identitysec2x + csc2x = sec2x csc23. Prove the following identity:xxxxxtancotsincos2cosx
4.If54cosAand23sinB, with A in QIV and B in QII, find the following exactvalues:cosA=4/5cosB=-1/2sinA=-3/5sinB=a. cos(A+B)b.)sin(BAc. tan Bd. cos 2A7/255. Graph at least 2 periods of)21sin(2xy.Label axis appropriately.f(x)=2sin(.5x)-5π-4π-3π-2ππ-3-2-1123xy6.Consider the identity for the following questions;4cos242cosxa. Show by graphing that the equation is not an identity.Label the axis.x

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