Question

What is the value of x in this figure?

52√

53√

103√3

5

Answer 1

cos(angle) = adjacent leg / hypotenuse

We fill in what we know and solve for x:

cos(30) = x / 10

x = cos(30) * 10

x = 5 SQRT(3)

Explanation:

cos(angle) = adjacent leg / hypotenuse

We fill in what we know and solve for x:

cos(30) = x / 10

x = cos(30) * 10

x = 5 SQRT(3)

Answer 2

Using the law of cosin

cos(angle) = adjacent leg / hypotenuse

We fill in what we know and solve for x:

cos(30) = x / 10

x = cos(30) * 10

x = 5 SQRT(3)