Short Answers of Trigonometry (Mathematics B /4MB1)
Trigonometry (2014-2016)
- (a) $56.3^{\circ} \quad$ (b) $B D=21.6 ; 20.1 \mathrm{~m}$
- $ 228^{\circ}$ { or } $ S48W $
- $322^{\circ}$
- (a) $B D=1.09 \mathrm{~cm} $ (b) $A D=1.42 ; 1.43 \mathrm{~cm}$ (c) $\angle A E D=27.2,27.3,27.4$
- (a) $46.7(\mathrm{~m})$ (B) $ 33.7^{\circ} $ (c) $ 322(321.5)$
- (a) $\angle B D C=50.2^{\circ}$ (b) $\angle B C D=43.0^{\circ}$ (c) $35.9 \mathrm{cm}^2$
- (a) $ 11.4 \mathrm{~cm}$ (b) $ 8.41,8.44$ or $ 8.45$
- (a) $\quad B D=11.5$ (b) $B C=8.55$ or $8.54$ (c) $A C=12.7$
- (a) $15^{\circ}$ (b) $57.2 \mathrm{~m}$ (c) $36.7 \mathrm{~m}$
- (a) $A C=23.1 $m (b) $\angle A C D=44.9^{\circ} $ (c) $ \triangle A B C=164 \mathrm{~m}^2$ (d) $\triangle A D B=120 \mathrm{~m}^2$
- $B C=8.05$
- (a) $\angle B A C=43.7^{\circ}$ (b) $\triangle B C Y=19.8$
- (a) $O A=11.4$ (b) $A P=8.44$ (c) $B C=4.68$ (d) $B C P Q=10.9 \mathrm{~cm}^2$
- $71$
- $21 .9 \mathrm{~cm}^2$
- (a) 36.2 (b) $47.2 ^\circ$ (c) 155 $cm^2$
- $e^\circ=113^\circ$
- (a) $A C=3.71$ (b) $\triangle B C D=2.79$
- $146\left(\mathrm{~cm}^2\right) \quad$
- (a) 16.2 (b) $33.2^{\circ}$ (c) $22.8\left(\mathrm{~m}^2\right) \quad$
- $7.31 \mathrm{~cm} \quad$
- (a) $D E=7 \mathrm{~cm}$ (b) $B D=2.5 \mathrm{~cm}$ (c) Area $\triangle A B C=39 \mathrm{~cm}^2 \quad$
- (a) $A D=8.51$ (b) $B C=6.22$ (c) $\angle A E C=42^{\circ}$ (d) $A B D E=49.9 / 49.8$
- (a) show (b) $B C=14 \mathrm{~cm} \quad$ (c) $\angle A B C=38.2^{\circ}$ (d) $\angle P A D=81.8$ (e) $65 \mathrm{~cm}^2\left(64.9 \mathrm{~cm}^2\right)$
- $460 cm^2 (459 / 460 / 461)$
- (a) show (b) $A G=12.5 \quad$ (c) $\angle G A B=22.4 \quad$ (d) $69.6 \quad$ (e) $59.5 \%$
- (a) $B C=8.24$ (b) $A D=13.8$
- (a) $BD=6.39$ (b) $\angle BDC = 32.4 ^\circ$ (c) $CD = 6.52$ or 6.53
- (a) $E B=9.23 $ (b) $ A B=13.0 $ (c) $ 5.19,5.20 $ (d) $ \angle B E C=32.6,32.7^{\circ} $ (e) $ 140 \mathrm{~cm}^2 \quad$
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