E = (5tan20 + cot70)(3cot70 - 2tan20)?
E = (5tan20 + cot70)(3cot70 - 2tan20).
E = (5tan20 + cot70)(3cot70 - 2tan20).
En resumen
E = (5tan20 + cot70)(3cot70 - 2tan20) tg20 = cot 70 ( su co - razon)resolviendoE = (5cot70 + cot70)(3cot70 - 2cot70)E = 6cot70(cot70)E = 6cot²70 E = 6(4 / 11)²E = 6(16 / 121)E = 96 / 121.
E = (5tan20 + cot70)(3cot70 - 2tan20) tg20 = cot 70 ( su co - razon)resolviendoE = (5cot70 + cot70)(3cot70 - 2cot70)E = 6cot70(cot70)E = 6cot²70 E = 6(4 / 11)²E = 6(16 / 121)E = 96 / 121.