Answer:
Step-by-step explanation:
Given expression is .
Now we need to multiply this using FOIL.
F = First
O = Outside
I = Inside
L = Last
Hence we get :
Suppose the length of the diagonal of this rectangular television screen is 29 inches and the length of the base of the screen i
s 21 inches.What is h, the height of the television screen?
A. 25 in.
B. 21 in.
C. 15 in.
D. 20 in.
A. 25 in.
B. 21 in.
C. 15 in.
D. 20 in.
1 answer:
Answer: the height of the television screen is 20 inches
Step-by-step explanation:
The diagram of the rectangular television screen is shown in the attached photo. The rectangle is labelled as ABCD. The diagonal forms a right angle triangle, ABC. This means that angle B is 90 degrees. The height it labelled as h. To determine h, we will apply Pythagoras theorem. Pythagoras theorem is expressed as
Hypotenuse ^2 = opposite ^2 + adjacent ^2
From the diagram,
hypotenuse = 29 inches
Adjacent = 21 inches. Therefore,
29^2 = 21^2 + h^2
h^2 = 29^2 - 21^2 = 841 - 441
h = √400
h = 20 inches
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Step-by-step explanation:
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The result of this calculation is:
where the angle is in degrees
If then:
Therefore the answer is 0.85 radians