Question #7267c
4 Answers
See below
Explanation:
We'll be applying one key trigonometric identity to solve this problem, which is:
Firstly, we want to turn the
We plug this in:
Also, note that the ones on both sides of the equation will cancel:
Secondly, we want to turn the remaining
We can now plug this in:
Lastly, we move the
Now, we add
And there you have it. Note that you could have done this very differently, but as long as you end up at the same answer without doing incorrect math, you should be good.
Hope that helped :)
See the explanation
Explanation:
We know ,
Or
Use this value in equation
We get ,
Squaring both sides
Use the value of
Now use the identity in green color.
We get ,
Hence proved.
see below
Explanation:
we have,
Expressing
We have,
Or,
Now putting this value in the R.H.S portion of your second equation,we have,
Or,
Hence proved a[ L.H.S=R.H.S]
plugging in the identity,
so,
we've gotta prove that,
Hence Proved.!