Question

Solve for x and y...............​

Answer 1

Answer:

9. $x=30, y=10\sqrt{3}$

11. $x=5\sqrt{3}, y=10\sqrt{3}$

Step-by-step explanation:

9)

$\sin x=\dfrac{10}{20}\\x=\sin^{-1}\left( \dfrac{1}{2} \right)=30^{\circ}\\y=\sqrt{20^2-10^2}=\sqrt{400-100}=\sqrt{300}=10\sqrt{3}$

11)

$\tan 60= \dfrac{15}{x}\\x=\dfrac{15}{\tan 60}=5\sqrt{3}\\y=\sqrt{(5\sqrt{3})^2+15^2}=\sqrt{75+225}=\sqrt{300}=10\sqrt{3}$

Hope this helps!

Answer 2

Answer:

9 for x..................