Question

calcule a expressão ?​

Answer 1

Resposta:

ainda n cheguei nesse nível kkk foi mal

Answer 2

Resposta:

Explicação passo-a-passo:

Temos:

(cossec π/6 + sen π/6)(sen π/4 - sec π/3) =

cossec π/6.sen π/4 - cossec π/6.sec π/3 + sen π/6.sen π/4 - sen π/6.sec π/3 =

$\frac{sen\frac{\pi}{4}}{sen\frac{\pi}{6}}-\frac{1}{sen\frac{\pi}{6}}.\frac{1}{cos\frac{\pi}{3}}+sen\frac{\pi}{6}.sen\frac{\pi}{4}-\frac{sen\frac{\pi}{4}}{cos\frac{\pi}{3}}$ =

$\frac{\frac{\sqrt{2}}{2}}{\frac{1}{2}}-\frac{1}{\frac{1}{2}}.\frac{1}{\frac{1}{2}}+\frac{1}{2}.\frac{\sqrt{2}}{2}-\frac{\frac{\sqrt{2}}{2}}{\frac{1}{2}}$ =

$\sqrt{2}-4+\frac{\sqrt{2}}{4}-\sqrt{2}$

$-4+\frac{\sqrt{2}}{4}$ =

$\frac{-4.4-\sqrt{2}}{4}$ =

$\frac{-16+\sqrt{2}}{4}$