Simplify the expression: 2(5 + 7c) need help
2 answers:
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Answer:
<u>Question 11:</u>
<u>Question 12:</u>
,
,
and
<u>Question 13: </u>
AC and BD are perpendicular lines, and they are diagonals
Step-by-step explanation:
<u>Question 11</u>
Given
See attachment for Rhombus
Required
Determine the indicated sides
Solving (a):
Diagonal CA divides into 2 equal angles
i.e
So:
Solving (b):
The angles at E is 90 degrees because diagonals AC and BD meet at a perpendicular.
So:
Solving (c):
First, we calculate , considering
:
To calculate , we have:
Solving (d):
From the rhombus
Where
So:
Solving (e):
To do this we consider
Using the tan formula
and
So:
Solving (f):
This is calculated as:
Where
<u>Question 12: Isosceles Triangle</u>
In the rhombus, all 4 sides are equal;
So, the isosceles triangle are:
,
,
and
<u>Question 13: </u>
AC and BD are perpendicular lines, and they are diagonals
