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## Trigonometric Formulas

by: MaKena Betler

21

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# Trigonometric Formulas MTH 151 Cr.4

MaKena Betler
UW - L
Precalculus
No professor available

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Chapter 7 Section 3: Trigonometric Formulas
COURSE
Precalculus
PROF.
No professor available
TYPE
Class Notes
PAGES
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KARMA
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## Popular in Mathematics (M)

This 0 page Class Notes was uploaded by MaKena Betler on Wednesday November 4, 2015. The Class Notes belongs to MTH 151 Cr.4 at University of Wisconsin - La Crosse taught by a professor in Fall 2015. Since its upload, it has received 21 views. For similar materials see Precalculus in Mathematics (M) at University of Wisconsin - La Crosse.

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Date Created: 11/04/15
Chapter 7 Section 3 Trigonometric Formulas AdditionSubtraction formula 0 coslA BcosAcosBsinAsinlB 39 00515 cos 45 30 A45 B30 cosl45 cosl30 sinl45 sinl30 Q E Q 1 l5 2 2 2 2 4 O cosABcos 7A B 39 LeoslAcos BsinAsin B 39 LCOSACOSBsinAsin B 39 cosA3cosABcosAcosB sinAsinB Cofunction formulas 0 sin E x cosx 2 0 cos E x sin x 2 0 tan E x cot x 2 o csc E x seclx 2 H 0 sec x cscx 2 o cot E x tanx 2 0 Ways to prove formulas O cos9OO 3OO sin30 cosl600lsinl300l 0 When you graph sin g x it is the same as graphing COSlx 0 cosA B cosA cosBsinAsinB AZEBx 2 H cos E x cos cosxs1n s1nxs1nx More formulas O sinABcos g AB Lcos E A B 2 Lcos E A cosBsin E A sinB 2 2 sinABsinAcosBcosAsinB sin AB cos AB sinAcos BcosAsin B Z cosAcosB sinAsin B cosA cos B o tanAB cosAcos B sin A sin fA Z cos fA cos B 1 sinAsin fB cosA cos B tanAtan fB 1 tanAtanB tanA tan B 1tanAtan B O sinA BsinAcosB cosAsinB 0 Examples 0 tan15 Ltan45 30 Z tan45 tan 60 1 tan45 tan 60 U 2 tanAB O tanA B Z 2 o sin105 Lsin60 45 Lsin60 cos45 cos60 sin45 1315 112 o 2 2 22 L Ef2 4 sinAAisEQuadII secBBisEQuadI find cosAB findwhich QuadcosABisEZ cosA3cosAcosB sinAsinB 5 13 5 23 13 5 13 5 z 20 x 65 65 56 cosAB sinABsinAcosBcosAsinB 2 1 15 2 13 5 13 5 3 E 65 A 65 QuadII 1COSAE 2sin3 45 65

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