If Δ.ABC ~ Δ.RQP, A-80. & LB-OU What IS the value orA ladder 15m lon

1.	If Δ.ABC ~ Δ.RQP, A-80. & LB-OU What IS the value orA ladder 15m long just reaches the top of a vertical wal. If the ladder makes an ange of0° with the wall. Find the height of the walkil he its volume?
Answer» Right angle at Let the length of ladder AC = 15 m ( hypotenuse ) Angle between ladder and wall < BCA= 60 degrees Angle between ladder and the ground < CAB = 90 - 60 = 30 degrees Height of the wall = BC From triangle ABC, Sin Sin 30 = BC / 15 1 / 2 = BC / 15 15 / 2 = BC 7.5 = BC Therefore, Height of the wall = BC = 7.5 m

If Δ.ABC ~ Δ.RQP, A-80. & LB-OU What IS the value orA ladder 15m long just reaches the top of a vertical wal. If the ladder makes an ange of0° with the wall. Find the height of the walkil he its volume?

Answer»

Right angle at Let the length of ladder AC = 15 m ( hypotenuse )

Angle between ladder and wall < BCA= 60 degrees

Angle between ladder and the ground < CAB = 90 - 60 = 30 degrees

Height of the wall = BC

From triangle ABC,

Sin Sin 30 = BC / 15

1 / 2 = BC / 15

15 / 2 = BC

7.5 = BC

Therefore,

Height of the wall = BC = 7.5 m