Question

Calculate the total angle of the triangle BAC bellow

Answer 1

Answer:

By using Pythagoras theorem,

AB² = BC² + AC²

13² = 12² + AC²

169 - 144 = AC²

25 = AC²

AC = 5cm

tan x = 5 / 12

tan x = 0.4167

x = theta = 0.39479111

Answer 2

Answer:

"Using Pythagorean theorem"

AB² = BC² + AC²

13² = 12² + AC

169 + 144 = AC²

25 = AC²

AC = 5 cm

Tan x = 5/12

Tan x = 0.4167

x = Tan = 0.39479111