Leabhar Iomlán - Cogg

5. (i) a 5 (ii) 25 √ _______ 326. 2.9 m7. (i) [4, 4] (ii) (iii) 4(iv) g(x) 4 cos x; f(x) 2 sin 2x(v) P ___( 5 4 , 2 )8. 3.13 m9. (a) (i) 9.4 m (ii) 42°(b) Níl; gluaiseann na súile 32.4°10. (i) ____ 2n 3 ___ 18 nó ____ 2n 3 ____ 11 18Ceisteanna C1. (i) 6.5 m (ii) 21.0 m (iii) 63.4°(iv) 23.3 m (v) 16.2°2. (i) k _____ 8tan (ii) 49°3. (i) 4 2 √ __2 (ii) 8 8 4 √ __24. 12 mhéadar5. (i) Peiriad ; Raon [3, 3](ii) (a) 10.4 cm (b) 1 1_7. (i)_______ htan 25°( i i)h _______tan 33°4 raidian8. 38°9. (i) 10°, 110°, 130°, 230°, 250°, 350°(ii) ____( 32 3 8 √ __3 ) cm 2(iii) 22.7 m10. (i) a (0, 4), b (0, 4), c ( 6 , 0 ) , d ( e ( ___ 5 6 , 0 ), f ___( 4 (ii) 20.5 m3 , 0 )Caibidil 3: Céimseata 1Triailcheisteanna 3.1____2 , 0 ) ,1. a 46°, b 134°, c 80°, d 100°, e 65°2. a 111°, b 74°, c 112°, d 65°, e 40°,f 52 1_ °, g 60°, h 30°23. a 62°, b 110°, c 55°, d 34°4. (i) x 55°, y 45° (ii) x 116°, y 52°(iii) x 80°, y 30°5. (i) √ ___76 ( 2 √ ___19 ) (ii) 4 √ __2 (iii) 2 √ ___116. x 10, y 88. (i) Uillinneacha ailtéarnacha9. (i) B'fhéidir nach bhfuil na sleasa ar comhfhad.10. (i) Tá an dá cheann cothrom le 90° |∠CBG|11. √ ____10512. ∠DEATriailcheisteanna 3.21. (i) 36 cm 2 (ii) 6 cm2. (i) 4.8 cm (ii) 10.5 cm (iii) 21.6 cm3. (i) 96 cm 2 (ii) 126 cm 2 (iii) 143 cm 24. 308 cm 2 ; 17 1_9 c m5. (i) Is í ∠BAC an uillinn is mó; is í ∠ACB anuillinn is lú; |AC| 5 cm agus 15 cm6. (i) 5 cm (iii) 8 cm7. (i) 30 cm 2 (ii) 30 cm 2(iii) 45 cm 2 (iv) 4 cm8. (ii) 150 aonad cearnach9. (i) 3(a 2); 7a (ii) a 1.510. (i) 5(2x 1); 12x (ii) x 2.511. 76 cm 2Triailcheisteanna 3.31. (i) 2.5 (ii) 9 (iii) 5 5_62. x 8.4, y 2.8; a 6, b 8.43. 14.44. 4.85. |BC| 4.2; |BP| 1.66. (i) 20 cm (ii) 2 : 3 (iii) 20 cm7. (i) 8 cm (ii) 7 cm8. ___ 12x9. (i) Tá na triantáin comhuilleach(ii) [DF] (iii) x 967 , y 64710. x 4.5, y 411. (i) [XY] (ii) x 9, y 13.512. (i) x 16 2_ , y 103(ii) x 8, y 51_313. (i) 9 (ii) 1814. (ii) 615. |BD| 11.25; |AB| 916. (i) △ABC agus △DBC (ii) m 6, n 617. x 518. (i) △WXZ (ii) w 6 2_3 , v 5 1_319. x 0.618; 1 : 1.61820. ___ √__ 2121. 10.8 mTriailcheisteanna 3.41. a 96°, b 88°, c 136°, d 84°, e 48°2. a 52°, b 44°, c 45°, d 20°3. a 47°, b 94°, c 43°4. f 40°, g h 55°5. a 42°, b 48°, c 40°, d 55°, e 35°6. a 95°, b 75°, c 43°, d 116°, e 64°7. 60°, 54°, 66°Téacs agus Trialacha 4195