Question

Nos triângulos abaixo, determine o seno, o cosseno e a tangente do ângulo alfa

Answer 1

Resposta:

a)

$sen\,\alpha= \dfrac{15}{17}=0.88\\cos\,\alpha=\dfrac{8}{17}=0.47\\tg\,\alpha=\dfrac{sen\,\alpha}{cos\,\alpha}=\dfrac{15}{8}=1.875$

b)

$sen\,\alpha=\dfrac{3}{5}=0.6\\cos\,\alpha=\dfrac{4}{5}=0.8\\tg\,\alpha=\dfrac{sen\,\alpha}{cos\,\alpha}=\dfrac{3}{4}=0.75$