Question

Find the area outside the curve r = 2 and inside the curve r= 4 sino For the toolbar, press ALT.10 (RC)

Answer 1

. 8= 28=usino 2=4 sino a Esino = 1 = sino and o-(1-5).(5) 2 4 T TIG urres wes is given by Area between two polar s I (02282) do. 02 A 57/6 s } [c4sino)?-(0)?] do 5A6 I *16 576 S */6 5706 [ 16 sino - 4 ]do = S 3*4 [4siớio - 1] do Ź T/ 4 (1-c0320) -1] do [: sin'no: 1-cosao 2 */6 57/6 9116 [2 - 2W5 (20) - 1 ] do +/6 57/6 و وہ [1-2WS(20)) do 7/6

28 [03a16 5716 *16 5416 [Sido gal los (20) do 지 6 5x16 - 2 + -20%)-[(y) Sm(*) se{ 4* - 3in (55) + Bin (55) + Sim()} • 2325 - Son (21-43) + S0 (5)} 2331-(-))+ sin(5)} [": 518(26-6) +2925+ sin(q) + sin(5)} A } $25+25] *233*+55} - 49 +2 v3 • Required Area = =-sino] ES 2 ve + 2$35+ 4 48 + 253