Question

Determine os valores de seno cosseno e tangente ​

Answer 1

Resposta:

Letra D. Seno =

$\frac{ \sqrt{3} }{2} = \frac{10}{ x} \\ \sqrt{3} x = 20 \\ x = \frac{20}{ \sqrt{3} } \\ x = \frac{20 \sqrt{3} }{3}$

Cosseno =

$\frac{1}{2} = \frac{x}{ \frac{20 \sqrt{3} }{3} } \\ 2x = \frac{20 \sqrt{3} }{3} \\ \frac{20 \sqrt{3} }{3} \times 2 \\ 120 \sqrt{3}$

Tangente =

$\frac{120 \sqrt{3} }{10} \\ 12 \sqrt{3}$

Letra E Seno =

$\frac{ \sqrt{2} }{2} = \frac{22}{y} \\ \sqrt{2y} = 44 \\ y = \frac{44}{ \sqrt{2} } \\ y = 22 \sqrt{2}$

Cosseno =

$\frac{ \sqrt{2} }{2} = \frac{x}{22 \sqrt{2} } \\ 2x = 44 \\ x = 22$

Tangente =

$22 \sqrt{2} \div 22 \\ x = \sqrt{2}$

Espero ter ajudado.