Math 124 Exam 1 Study Guide F19.docx - Math 124 \u2013 Exam 1 Study Guide Trigonometry McKeague 8th Ed Chapters 1 2 Definitions and Identities to be

Math 124 Exam 1 Study Guide F19.docx - Math 124 u2013 Exam...

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Math 124 – Exam 1 Study GuideTrigonometryMcKeague 8thEd. Chapters 1 & 2Definitions and Identities to be MemorizedPythagorean TheoremIf then .Special Right Distance FormulaThe distance between any two points (x1, y1)and 22,xyin the rectangular coordinate system is given by the formula: 222121rxxyyDefinition I: Trigonometric FunctionsIf is an angle is standard position and(x, y)is any point on the terminal side of(other than the origin), thensinyrcscrycosxrsecrxtanyxcotxywhere 222rxyor 22rxy.Signs of Trigonometric Functions by QuadrantRatio IdentitiessintancoscoscotReciprocal Identities1cscsin1sincsc1seccos1cossec1cottan1tancotPythagorean Identities and Equivalent Forms22cossin12cos1sin221tansec2sin1cos221cotcscTrigonometric Functions of Special Angles - Exact ValuesDefinition II: Trigonometric FunctionsIf ABCis a right triangle with C=90o, thensinA=side opposite Ahypotenuse=accscA=hypotenuseside opposite A=cacosA=side adjacent Ahypotenuse=bcsecA=hypotenuse=csincostan0o01030o123213=3345o12=2212=22160o3212390o10undefined