Respuesta :

mhanifa

Answer:

  • B) 8

Step-by-step 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

thebirdferd

Answer:

Step-by-step explanation:

B) 8

Step-by-step 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

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