i just need # 11

Exercise: Find the Sine, Cosine, and Tangent of 2 times Theta + PDF Transcript for Exercise: : Find the Sine, Cosine, and Tangent of 2 times Theta 8. sin 0 = =, tan 0 > 0 9. cos 0 = V5 5 , Sin 0 > 0 Answer 5 10. cos 0 = - 0 in Quadrant III 8 11. tan 0 = NIU 0 in Quadrant II AnswerFor Exercises, 21-. 34, verify the identity. (See Example 2) sin 29 cos 26 23. ($05\"): sin4x = cos 2x 83. A feeding trough for cattle is made from a metal sheet 3 ft wide. The sides of the trough are made by folding up a flap 1 ft wide from each end of the strip. Each flap makes an angle O with the horizontal. a. Write an expression representing the area of a cross section of the trough in terms of 0. Answer b. Show that the area can be written as A = - sin 20 + sin 0. 1 ft 1 ft 1 ft 0 1 ft 3 ft 3 ft