Question

Pls help me...........

Answer 1

Answer:

$\frac{4}{5}$

Step-by-step explanation:

Using the Pythagorean identity

sin²x + cos²x = 1, then

sin²x = 1 - cos²x

sinx = $\sqrt{1-cos^2x}$

note that cosΘ = $\frac{6}{10}$ = $\frac{3}{5}$

sinΘ = $\sqrt{1-(3/5)^2}$

        = $\sqrt{1-\frac{9}{25} }$

        = $\sqrt{\frac{16}{25} }$ = $\frac{4}{5}$