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Unformatted text preview: x<2 : cos 2x = cos x π ≤ Example Solve for x where 0 x<2 : 4 sin x cos x = 3 π ≤ Using a Calculator to Solve Trigonometric Equations Example 2 Use a calculator to solve each equation, correct to four decimal places, on the interval (0,2 ). 8 sin 1 x π = Example 2 Use a calculator to solve each equation, correct to four decimal places, on the interval (0,2 ). cos 5cos 8=0 x x π + (a) (b) (c) (d) Solve for x where 0 x<2 without a calculator: sin x= sin 2x π ≤ 5 0, , , 6 6 5 0, , , 3 3 3 5 , , , 2 2 3 3 3 5 , , , 2 2 6 6 π π (a) (b) (c) (d) 2 Solve for x where 0 x<2 : 2 cos 2 1 cos 2 x x π ≤ = 4 , , 3 3 7 3 , , , 6 6 2 2 3 4 , , , 2 2 3 3 3 5 , , , 2 2 6 6 π π...
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 Fall '11
 jayjohn
 Trigonometry, Euler's formula

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