Θ=20
sinθm=1/2sinθb
Θ=47
sin20 mirror=1/2sin47bench
Answer:
x=5
Step-by-step explanation:
Answer:
Kindly refer to explanation.
Step-by-step explanation:
Given that:
A,B and C are 3 points on circumference of circle with centre O.
AOB is diameter.
Kindly refer to the attached image.
To prove:

Solution:
Let
and
.
<em>Construction</em>: Join point A with centre O.
Considering
:
Side AO = OC because both are the radius.
Angles opposite to equal sides in a triangle are equal.
Therefore, 
Considering
:
Side BO = OC because both are the radius.
Angles opposite to equal sides in a triangle are equal.
Therefore, 
...... (1)
Now, in 
Using angle sum property of triangle:

By equation (1):

Hence proved.
Answer:
21x + 12
Step-by-step explanation:
Distribute
3(7x) = 21x 3(4) = 12
21x + 12
So that’s the answer cuz like terms cannot b combined with numbers