Pre-Calculus Practice Problem 195

Pre-Calculus Practice Problem 195 - Unit 6, Activity 4,...

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Unit 6, Activity 4, Using the Fundamental Identities to Solve Trigonometric Equations with Answers Blackline Masters, Advanced Math - Pre-Calculus Page Louisiana Comprehensive Curriculum, Revised 2008 193 5. 0 1 sin cos 2 = + + x x 1 – sin 2 x + sin x + 1 = 0 sin 2 x – sin x - 2 = 0 (sin x – 2)(sin x + 1) = 0 x = 270 o Y1: 0 1 sin cos 2 = + + x x 6. csc2 x – 2cot x - 1 = 0 12 1 0 20 2 +−− = −= cot cot cot cot xx bg cot x = 0 or cot x = 2 x = 90 o , 270 o , 26.6 o , 206.6
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