Three security cameras were mounted at the corners of a triangular parking lot. camera 1 was 156 ft from camera 2, which was 101 ft from camera 3. cameras 1 and 3 were 130 ft apart. which camera had to cover the greatest angle?

Step-by-step explanation:

Alright, lets get started.

Please refer the diagram I have attached.

Lets use cosine law for finding the angles.

Taking cos inverse

A = 40.08 degrees

Similarly,

taking cos inverse

B = 55.97 degrees

Similarly,

taking cos inverse

C = 83.95 degrees

Means angle C is the largest angles,

So, camera 3 is covering the greatest angle.   :  Answer

Hope it will help :)

i believe the correct answer is b.

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm