Question

cos(-θ)
what is the meaning of negetive sign in the above Trigonometric function ? ​

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) .

Answer 2

Answer:

sister sorry for spamming

are these questions from 10 th std Or of higher std

Step-by-step explanation:

plz tell