Taking Rhs
1/2 [sin(x+y)+ sin (x-y)]
using sinA + sin B = 2 cos (A+B)/2 cos( A - B)/2
1/2 [ 2 Cos ( x+y+x-y)/2 . Cos (x+y-x+y)/2]
=Cos 2x/2. Cos 2y/2 = Cos x . Cos y
Hence true
Answer:
40 m
Step-by-step explanation:
The length of another side
= 99÷11
= 9 m
The perimeter of the field
= 9×2 + 11×2
= 40 m
The answer to you’re question is 8
<u><em>Answer:</em></u>
35 square units
<u><em>Explanation:</em></u>
<u>Area of parallelogram is calculated as follows:</u>
Area = base * height square units
<u>In the given question, we have:</u>
base = 5 units
height = 7 units
<u>Substitute with the givens in the above equation to get the area:</u>
Area of parallelogram = 5 * 7 = 35 square units
Hope this helps :)
