6 7 4 7 4 5 tg cos sen 3 3 2 3 2 cos sen sen 4 7 2 7 4 5 4 7 tg cos cos ...
6 7 4 7 4 5 tg cos sen 3 3 2 3 2 cos sen sen 4 7 2 7 4 5 4 7 tg cos cos ...
6 7 4 7 4 5 tg cos sen 3 3 2 3 2 cos sen sen 4 7 2 7 4 5 4 7 tg cos cos ...
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Nº2Matemática: 11ºA1. Calcula o valor exato de cada umas das seguintes expressões:1.1. <strong>sen</strong> 240º<strong>cos</strong> 150º<strong>tg</strong> 330º1.2. <strong>sen</strong> 300º<strong>tg</strong> 225º<strong>cos</strong> 210º1.3.<strong>sen</strong>54<strong>cos</strong>74<strong>tg</strong>761.4.<strong>tg</strong>3<strong>cos</strong>32<strong>cos</strong>611<strong>cos</strong>61.5.<strong>sen</strong>232<strong>sen</strong>3<strong>cos</strong>31.6.<strong>sen</strong>74<strong>cos</strong>54<strong>cos</strong>72<strong>tg</strong>741.7.<strong>sen</strong>76<strong>sen</strong>176<strong>cos</strong>23<strong>tg</strong>83<strong>sen</strong>1562. Simplifica cada uma das seguintes expressões:2.1. <strong>sen</strong> 2 x <strong>cos</strong> 2 x 2<strong>tg</strong>3 x <strong>sen</strong> 3 x2.2. <strong>cos</strong> x 2 <strong>cos</strong> 3 x <strong>sen</strong> x 3<strong>cos</strong>x <strong>sen</strong> 2 x2.3. <strong>tg</strong> x 2 <strong>sen</strong> x 3<strong>cos</strong>5 x 2<strong>cos</strong>4 x2.4. <strong>sen</strong> x 3 <strong>sen</strong> x 3<strong>cos</strong>x <strong>tg</strong> 2 x2.5. <strong>sen</strong> x <strong>cos</strong> 4 x <strong>tg</strong> 7 x <strong>sen</strong> 6 x 3<strong>sen</strong>x52.6. <strong>cos</strong> x 5 <strong>cos</strong> 3 x <strong>sen</strong> x2392.7. <strong>sen</strong> x 7 <strong>cos</strong> x <strong>sen</strong> x22772.8. <strong>sen</strong> x <strong>cos</strong> 11 x <strong>cos</strong> x2252.9. <strong>cos</strong> x <strong>cos</strong> x <strong>tg</strong> x .<strong>tg</strong> x22 2ANO LECTIVO 2011-2012
PÁGINA - 22.10.<strong>cos</strong>x2<strong>tg</strong>2<strong>sen</strong>xx32.11. <strong>sen</strong> x <strong>sen</strong> x <strong>cos</strong> x <strong>sen</strong> x2 223. Sabendo que <strong>cos</strong>3.1. <strong>sen</strong> <strong>cos</strong>3.2.<strong>tg</strong><strong>sen</strong>2<strong>cos</strong>352e3, , calcula:24. Considera o ângulo de amplitude , tal queCalcula:4.1. <strong>sen</strong>4.2. <strong>cos</strong> <strong>tg</strong> 3 <strong>cos</strong>0 e22<strong>sen</strong> .35. Sabendo que3<strong>sen</strong> e 3 4 , calcula:2 55.1. <strong>cos</strong> x 135.2. <strong>sen</strong> 2 x5.3.<strong>sen</strong>x325.4. <strong>tg</strong> 4 x6. Sabendo que <strong>cos</strong> x 0 e <strong>sen</strong>x 3 <strong>cos</strong> x , calcula:6.1. <strong>tg</strong> x <strong>sen</strong> 3 x26.2.<strong>cos</strong>x321<strong>tg</strong>xBom Trabalho!A Prof. Preciosa Teixeira
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