Aladder, 500 cm long, leans against a building. if the angle between the ground and the ladder is 57 degrees, hiw far from the wall is the bottom of the ladder.

Answer  

Find out the how far from the wall is the bottom of the ladder.

To prove

As given

A ladder, 500 cm long, leans against a building.

If the angle between the ground and the ladder is 57 degrees .

Now by using the trignometric identity

As

Hypotenuse = 500 cm

put  in the above trignometric identity

Take

cos 57° = 0.54464 (approx)

Base = 0.54464 × 500

Base = 272 .32 cm

Therefore the wall is 272.32cm far from the bottom of the ladder .

the answer will be b x² +x-1

step-by-step explanation: