The value of x can be found using the sine function.
sin 30 = x/8
8 (sin 30) = x
4 = x
        
             
        
        
        
First let's rewrite it...
18a^2 + 20a + 8
Factor out a 2
2 (9a^2 + 10a + 4)
        
             
        
        
        
Answer:
- Angle 'a' is an alternating exterior angle with one angle in the triangle and therefore congruent to one angle in the triangle formed by lines m, x, and y.
- Angles 'b' and 'c' are vertical angles with the other two angles in the triangle and therefore congruent to two other angles in the triangle 
Step-by-step explanation:
Vertical angles are angles that are equal to each other but in opposite direction. The angles b and c have vertical angles on the triangle Q while alternate exterior angles are equal angles that lie on different lanes cutting through an axis.
Angles on a plane can be congruent if they are vertical equals or alternating exterior angles. 
 
        
             
        
        
        
Given is triangle with base = 10 cm and perpendicular height = 3 cm.
We know the formula for area of triangle is given by :-
Area =  × (Base) × (perpendicular height)
 × (Base) × (perpendicular height)
Area =  × (10) × (3)
 × (10) × (3)
Area = 
Area = 15 cm²
So, final answer is 15 cm².
 
        
             
        
        
        
Answer:
47.1cm
Step-by-step explanation: