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Seard 2. Evaluate without using a calculator. Draw a picture. Show and label where your answer lies. What is the reference an
3. Find the length of the arc s intercepted by a central angle 0 = 330 in a circle of radius r =6 in. Round your answer to th
1 4. If cos e and a <o<ža , find the exact value of 4 a. sin e I b. tane
5. Prove the following identity. Make sure you clearly show your steps. Start with one side and try to end up with the other
6. If cos(x) = 5, and xeQIV , find the exact value of each of the following. Show all work. a.sin(2x) b.cos
8. Solve the triangle with a = 41.2°, y = 101.3,b= 14.2. Show all work. Round to the nearest tenth.
a = a= B= b= y = са 9. Solve the triangle with a = 4.4,b=10.1,c=6.8. Show all work. Round to the nearest tenth.
10. a. Plot and label the point given in polar coordinates: 3,- b. Give two different sets of polar coordinates for the same
11. What are the exact polar coordinates for the point (2,-273)? What is the reference angle? Graph and label the point.
math   trigonometry   
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Answer #1

y het 2) aj sin (-) m(-2) sino - - 12 sin =0 >n 3150 M Subo= -242 - y TE - a y. o mes in in quadrant and 0= 3150 315 Refere(1,3) E b) litan! (13) o = tan (3) y (here, & and y both are positive). 60° ( I quadeant) tan o = then refuence angle o = 0 &bulven Coso = - 4 + It cos 3 I o mes in I quadrant. coso - B 4 By bythagoues theorem, H² = pi + B² (4) ² = P² + 1102 16 = p²& Prove: (simt cosx ² = It sinax Taking Lits sinxt conx)? = sint 2012+ 2 sinx com resing identity fa+b) a2+6² + 2ab. 2 Sinu

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