How is the lever used in modern society

The lever is one of the simplest, but most useful, machines there are. A lever consists of a beam or rod that is fixed to a point, allowing it to rotate on itself. The lever is useful because it amplifies the force that is put on it (provides "leverage"). The lever is used in modern society in many different ways. For example, it is often used in construction in order to lift weights.

angle a = 40.6°

step-by-step explanation:

for any right angle triangle we know the pythagoras theorem reveals

hypotenuse² = height²+base²

by this formula we will calculate the length of hypotenuse

h² = 6²+7²

⇒ h =√36+49 = √85 = 9.22

now from the given triangle sin a = height/ hypotenuse

                                                sin a = 6/9.22 = 0.651

therefore

so angle a = 40.6°

australian plates collided into eurasian plates, and the himalayas formed. the andes mountain range the himalayas and the islands of japan form differently. the andes mountain range formed at the convergent boundary of an oceanic plate and continental plate.