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# test3Sp11 - Math 111 Test 3 1 Find the exact value of tan 1...

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Unformatted text preview: Math 111 Test 3 1. Find the exact value of tan- 1 √ 3 3 . (a) 0 (b) π 2 (c) π 6 (d)- π 3 (e)- 7 π 6 (f)- 4 π 3 2. Find the exact value of cos- 1 (cos 2 π ) (a) 2 π (b) π (c) 0 (d)- π 2 (e)- π 3 (f) None of above 3. Solve the equation for x . 50 sin- 1 ( x ) = 25 π . (a) 0 (b) 1 (c)- 1 (d)- 1 2 (e)- 1 3 (f)- 1 2 1 4. Find the exact value sec(tan- 1 (0)) (a) 1 (b)- 1 (c) 0 (d) 1 2 (e) √ 2 + 1 2 (f) √ 2 + 2 √ 3 2 5. Find the exact value of cos cot- 1 1 3 (a)- √ 10 10 (b) √ 10 (c)- √ 10 (d) √ 10 10 (e)- √ 3 (f) √ 3 6. Write the trigonometric expression tan cos- 1 2 x as an algebraic expression in x , x = 0, x > 0. (a) x (b) √ x 2- 4 2 (c) x- 2 2 (d) √ x 2- 4 x (e) x- 2 x 7. Rewrite the expression tan θ cot θ in terms of sin θ and cos θ , then simplify. (a) 0 (b) sin 2 θ cos 2 θ (c) sin θ cos θ (d)- sin θ cos θ (e) 2 sin θ cos θ 2 8. Simplify the following expression: sin 3 θ + cos 3 θ sin θ + cos θ (1) (a) 1 (b)- 1 (c) 1- sin θ cos θ (d) 1 + sin...
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test3Sp11 - Math 111 Test 3 1 Find the exact value of tan 1...

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