What is the area of the circle? Use 3. 14 as an estimate for pi.
1 answer:
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Answer:
Step-by-step explanation:
Given f(x)=
We have to find
In order to find we have to make x as the subject of the formula
Let us assume f(x)=y
⇒
Subtracting both sides by 5
Dividing both sides by 2
⇒
Now substituting y with x
we have
Now
=
So option (ii) is correct
Correct Option:
Option B
Solution:
The given expression is:
cos(3x) can be written as cos(2x +x). Expanding it, we get:
Using this value of cos(3x) in given equation, we get:
Option B
Solution:
The given expression is:
cos(3x) can be written as cos(2x +x). Expanding it, we get:
Using this value of cos(3x) in given equation, we get: