ejercicios de angulos y cofunciones de trigonometria
| __ | 1. | -2 (tg70 / cotg20) | | A. | -2 | | __ | 2. | -cos 20 sec 20 | | B. | 3 | | __ | 3. | 1 - cos2 (20) | | C. | cos 45 | | __ | 4. | 1 - sen 2 (50) | | D. | -sen30 | | __ | 5. | 3sec10 sen 80 | | E. | 2 sen 20 | | __ | 6. | sen20 + cos70 | | F. | 6 cot10 | | __ | 7. | sen30 -2cos 60 | | G. | 1 | | __ | 8. | sen40 cosec40 | | H. | cos2 (80) | | __ | 9. | sen 45 /tg 45 | | I. | cos 2 (50) | | __ | 10. | tg80 +5cotg 10 | | J. | -1 |
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