Explanation:
A longitudinal wave is composed of compressions and rarefactions. An example of a lomgitudinal wave is sound waves. It's a type of wave thay moves parrelel to axis.
There are many road signs or cop car blocking or even construction workers or vehicles
Explanation:
Sajan Bajgain?
Sajan Bajgain is a Computer Programmer, IT Professional, and Technology researcher from Nepal. He was born on April 18 2000 A.D in Kavrepalanchowk District. His interest on computer science is very high. He always keep researching new technologies and enthusiasts to learn how things actually work.He has written blogs on topics like cybersecurity, machine learning, artificial intelligence, programming, etc. His main work area is Database administration, Network Administration and System Administration.
Cos(2θ) = cos²θ - sin²θ = (1-sin²θ)-sin²θ = 1-2(7/9)^2 = -17/81
