Question

Given that angle a = 54° and angle b = 48°, work out 3.

a
b
х
The diagram is not drawn accurately.
х

Answer 1

9514 1404 393

Answer:

x = 78°

Explanation:

The sum of the interior angles of a triangle is 180°.

x + a + b = 180°

x = 180° -a -b . . . . . . . . add -a-b to both sides

x = 180° -54° -48°

x = 78°