Question

Which equation can be used to solve for b?
B
5 cm
10 cm
30°

Answer 1

The Question is Incomplete The complete question with figure is below.

Answer:

Therefore the equation to solve for b is

`\tan 30 = (5)/(b)`

Explanation:

Given:

In Right Angle Triangle ABC

∠C = 90°

BC = 5 cm

AB = 10 cm

∠A = 30°

To Find:

b = ?

Solution:

In Right Angle Triangle ABC Tangent identity we have

`\tan A = \frac{\textrm{side opposite to angle A}}{\textrm{side adjacent to angle A}}`

Substituting the values we get

`\tan 30 = (BC)/(AC)\\\\\tan 30 = (5)/(b)`

Therefore the equation to solve for b is

`\tan 30 = (5)/(b)`