Buscar

Loading [MathJax]/jax/output/HTML-CSS/jax.js

9.2E: Identidades de suma y diferencia (Ejercicios)
https://espanol.libretexts.org/Matematicas/Algebra/Libro%3A_Algebra_y_Trigonometria_(OpenStax)/09%3A_Identidades_trigonom%C3%A9tricas_y_ecuaciones/9.02%3A_Identidades_de_suma_y_diferencia/9.2E%3A_Identidades_de_suma_y_diferencia_(Ejercicios)
13. $\sin \left(70^{\circ}\right) \cos \left(25^{\circ}\right)-\cos \left(70^{\circ}\right) \sin \left(25^{\circ}\right)$ 14. \(\cos \left(83^{\circ}\right) \cos \left(23^{\circ}\right)+\sin \left(8...13. $\sin \left(70^{\circ}\right) \cos \left(25^{\circ}\right)-\cos \left(70^{\circ}\right) \sin \left(25^{\circ}\right)$ 14. $\cos \left(83^{\circ}\right) \cos \left(23^{\circ}\right)+\sin \left(83^{\circ}\right) \sin \left(23^{\circ}\right)$ 15. $\cos (4 x)-\cos (3 x) \cos x=\sin ^{2} x-4 \cos ^{2} x \sin ^{2} x$ 16. $\cos (3 x)-\cos ^{3} x=-\cos x \sin ^{2} x-\sin x \sin (2 x)$

Search