Question

Please help:) I’m stuck

Answer 1

Answer:

$x$ = 4.9  (1 dp)

Step-by-step explanation:

Use trig ratio $sin(\theta)=\dfrac{O}{H}$

where $\theta$ is the angle, O is the side opposite the angle and H is the hypotenuse of a right triangle.

Given:

• $\theta=55$
• O = $y$ = 4
• H = $x$

$\implies sin(55)=\dfrac{4}{x}$

$\implies x=\dfrac{4}{sin(55)}$

$\implies x = 4.9$   (1 dp)