3 years ago

Answer quick please! Help fast!!

1 answer:

8 0

C, because when you add 45 on both sides, and then after that when you have to subtract 15 in both sides, you get 0 = 120.

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2 years ago

Calcular: E = (sec245o + tg45o) ctg37o - 2cos60o

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$-2.813$

Step-by-step explanation:

Se simplifica inicialmente la fórmula en términos de las funciones trigonométricas fundamentales (Initially, the formula is simplified in terms of fundamental trigonometric functions):

$(\sec 245^{\circ} + \tan 45^{\circ} )\cdot \cot 37^{\circ} - 2\cos 60^{\circ}$

$\left(\frac{1}{\cos 245^{\circ}}+\frac{\sin 45^{\circ}}{\cos 45^{\circ}} \right)\cdot \left(\frac{\cos 37^{\circ}}{\sin 37^{\circ}} \right) - 2\cdot \cos 60^{\circ}$