Question

(50pts!!!!!!) How would I solve this trig problem without using a calculator?

Answer 1

Explanation:

B) 8

Explanation:

Given

x = 60°

BC = 4

To find

AB = ?

Solution

Since x = 60°, the other acute angle A is 30°

We have 30-60-90 right triangle

This triangle has side ratios:

1 : √3 : 2

The ratios give us:

AB/BC = 2

AB = 2*BC

AB = 2*4

AB = 8

Correct choice is B

Answer 2

• B) 8

Explanation:

Given

• x = 60°
• BC = 4

To find

• AB = ?

Solution

Since x = 60°, the other acute angle A is 30°

We have 30-60-90 right triangle

This triangle has side ratios:

• 1 : √3 : 2

The ratios give us:

• AB/BC = 2
• AB = 2*BC
• AB = 2*4
• AB = 8

Correct choice is B