Option A

<em><u>Solution:</u></em>
Given that we have to rewrite with only sin x and cos x
Given is cos 3x

We know that,

Therefore,
---- eqn 1
We know that,


Substituting these values in eqn 1
-------- eqn 2
We know that,

Applying this in above eqn 2, we get



Therefore,

Option A is correct
You need to win 30 matches in a row to raise its winning percentage to 90%
Answer:
16/21
Step-by-step explanation:
Hi sam, do you want to know the answer? Try using a protractor, you will see the degree is 125, its like a obtuse angle
Answer:

Step-by-step explanation:

Subtract 295 from both sides:

Add 33x to both sides:

Divide both sides by 72:
