Answer:
Given :
ABC is a right triangle in which ∠ABC = 90°,
Also, Legs AB and CB are extended past point B to points D and E,
Such that,
![\angle EAC = \angle ACD = 90^{\circ}](https://tex.z-dn.net/?f=%5Cangle%20EAC%20%3D%20%5Cangle%20ACD%20%3D%2090%5E%7B%5Ccirc%7D)
To prove :
![EB\times BD=AB\times BC](https://tex.z-dn.net/?f=EB%5Ctimes%20BD%3DAB%5Ctimes%20BC)
Proof :
In triangles AEC and EBA,
∠EAC= ∠ABE ( right angles )
∠CEA = ∠AEB ( common angles )
By AA similarity postulate,
,
Similarly,
![\triangle AEC \sim \triangle ABC](https://tex.z-dn.net/?f=%5Ctriangle%20AEC%20%5Csim%20%5Ctriangle%20ABC)
![\implies\triangle EBA\sim \triangle ABC-----(1)](https://tex.z-dn.net/?f=%5Cimplies%5Ctriangle%20EBA%5Csim%20%5Ctriangle%20ABC-----%281%29)
Now, In triangles ADC and CBD,
∠ACD = ∠CBD ( right angles )
∠ADC= ∠BDC ( common angles )
By AA similarity postulate,
,
Similarly,
![\triangle ADC \sim \triangle ABC](https://tex.z-dn.net/?f=%5Ctriangle%20ADC%20%5Csim%20%5Ctriangle%20ABC)
![\implies \triangle CBD\sim \triangle ABC-----(2)](https://tex.z-dn.net/?f=%5Cimplies%20%5Ctriangle%20CBD%5Csim%20%5Ctriangle%20ABC-----%282%29)
From equations (1) and (2),
![\triangle EBA\sim \triangle CBD](https://tex.z-dn.net/?f=%5Ctriangle%20EBA%5Csim%20%5Ctriangle%20CBD)
The corresponding sides of similar triangles are in same proportion,
![\frac{EB}{BC}=\frac{AB}{BD}](https://tex.z-dn.net/?f=%5Cfrac%7BEB%7D%7BBC%7D%3D%5Cfrac%7BAB%7D%7BBD%7D)
![\implies EB\times BD=AB\times BC](https://tex.z-dn.net/?f=%5Cimplies%20EB%5Ctimes%20BD%3DAB%5Ctimes%20BC)
Hence, proved....
The answer would be 0.95 totaling 1 as there is only 1 chance that this will happen
Answer:
0.09
Step-by-step explanation:
0.03 divided by 100
Answer: The guage block height is 4.98 m
The base of the right triangle that is formed is 7.3784 m
The last angle in the triangle is 56 degrees
Step-by-step explanation:
Redraw the triangle formed in the picture and use H for the hypotenuse, O for the block height, and A for the base. Now we can use trig (SOHCAHTOA) to find the answaers.
Using sine, we can first find the gauge block height, O (Opposite). Given the Hypotenuse (H) is 8.9 m, we can use the definition of the sine of an angle to find the height, O.
Sine(34) = Opposite/Hypotenuse (O/H), or O = H*Sine(34)
O = (8.9)*(0.5592)
O = 4.98 m, the height of the gauge block,
The base of the triangle, A, can be determined with cosine.
Cosine(34) = A/O, or A = Cosine(34)*O
A = (0.82904)*(8.9)
A = 7.3784 m
The sum of all angles in a triangle is 180 degrees.
180 = X + 34 + 90
X = 56 degrees
Answer:
65
Step-by-step explanation:
just to sum all the given measurements:
19+31+15=65.