Question

State whether you would use similar triangles, The primary trigonometric ratios (sine, cosine, tangent) , sine law or cosine law to find the missing value.

Answer 1

I would use similar triangles

Explanation:

There is no angle (apart from the right angle) given in the problem. so in order to find the side "x", in one step calculation, I would use similar triangles and the equation that comes from the proportion among the similar sides:

`(x)/(20) =(5)/(7)`