Cho tam giác ABC vuông tại a đường cao AH a) Cho AB=6,AC=8.Tính BC ,AH ,BH

b) Lấy K thuộc AC, kẻ AD vuông góc với BK .Chứng minh Tam giác BHK đồng dạng với Tam giác BDC

c) chứng minh BD²/AB²=BH . DC /HK .BK

answe

its a

step-by-step explanation:

true

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

im alright what do you need

step-by-step explanation:

the equation of the parallel line would be y = 2x + 9

step-by-step explanation:

to start we need to find the slope of the original line. we can do that by looking at the coefficient of x, which is 2

since the slope of the original line is 2 and parallel lines have the same slope, we know the new line will also have 2 slope. now we can use that along with the point given in point-slope form to get the find equation.

y - y1 = m(x - x1)

y - 5 = 2(x + 2)

y - 5 = 2x + 4

y = 2x + 9