Answer:
The value of x = 15.
Step-by-step explanation:
As shown in the figure the upper half part is 30° and the lower half part is 4 x.
Also from the figure-
<em>30° + 4 x = 90°</em>
<em>4 x = 90° - 30°</em>
<em>4 x = 60°</em>
<em>x = 60°/4</em>
<em>x = 15°</em>
Answer:
9
Step-by-step explanation:


9
Answer: -1.5
Step-by-step explanation:
Answer:
Step-by-step explanation:
we know that
The incenter of a triangle is the meeting point of the three angle bisectors of a triangle.
so

we have
-----> given problem
so
Remember that
In a triangle the sum of the internal angles must be equal to
so
In the right triangle OQB
substitute