If only two angles in a triangle are acute, what type of triangle could it be?
2 answers:
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I'm assuming this is what they want? haha
Answer:
[45tan(82°)+123] meters
A is correct
Step-by-step explanation:
You are standing 45 meters from the base of the Empire State Building.
You estimate that the angle of elevation to the top of the 86th floor(the observatory) is 82°.
If the total height of the building is another 123 meters above the 86th floor.
OB = 45 m , ∠O= 82°
In Δ OBA, ∠B = 90°
Top of the building, T at 123 m from A
Total height of building = BA + AT
Hence, The height of building from ground is [45tan82°+123] meters
Answer: Domain (-∞,∞) ; range: (0,∞)
Step-by-step explanation:
1. The exponential functions with the form has domain of all real numbers, becaure there is no values in the set of real number for which the value of
is not define. When
approches to ∞, the function approches to ∞.
2. When approches to -∞, the function approches to 0 but never touches it. This means that
is always greater than zero (
). Therefore, the range of the function is (0,∞).