Questão 1571363

𝑠𝑒𝑛 \(\frac{\pi}{2}\) = 𝑠𝑒𝑛 \(\frac{5\ \pi}{2}\) = 1

𝑠𝑒𝑛 870° = 𝑠𝑒𝑛 150° = 𝑠𝑒𝑛 30° = \(\frac{1}{2}\)

𝑡𝑔 135° = 𝑡𝑔 315 = −1

cos 600° = cos 240° = cos 60° = \(\frac{1}{2}\)

𝑠𝑒𝑛 330° = −𝑠𝑒𝑛 30° = \(-\frac{1}{2}\)