My hw is do tmrw plz help (answer 4 and 5)
1 answer:
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Answer:
The length of the flagpole be 41.2 ft .
Option (A) is correct .
Step-by-step explanation:
As given
The angle looking up at the sun is 70°.
A flagpole casts a shadow of 15 ft .
Now by using the trignometric identity .
BC = 15 ft
tan 70° = 2.75 (Approx)
AB = 2.75 × 15
= 41.2 ft
Therefore the length of the flagpole be 41.2 ft .
Option (A) is correct .
The function is not invertible if you think of it as
because it is not injective:
So, if we restrict the domain to the positive numbers only:
Note that the range is actually , so we can be more precise and write
To find the inverse, we solve the expression for x:
But since we restricted to positive values of x, the inverse is