Question

COS THETA +COS THETA

Answer 1

Answer:

Since the cosine is the x -coordinate of the points on the unit circle, you see that the two points have the same cosine, and opposite sine. In fact, the cosine is an even function, which means exactly that cos(x)=cos(−x) , while the sine is odd, which means that sin(x)=−sin(−x) .

Step-by-step explanation:

Answer 2

$\green{\bold{\underline{ ☆ UPSC-ASPIRANT ☆} }}$

$\red{\bold{\underline{\underline{QUESTION:-}}}}$

Q:-

$cos \theta + cos \theta$

$\huge\tt\underline\blue{ANSWER }$

------>>>>Here is your answer<<<<--------

$➜ cos \theta + cos \theta = 2cos \theta$

HOPE IT HELPS YOU..

_____________________

Thankyou:)