What is the relationship between sine and cosine?
1 Answer
Jul 3, 2015
Answer:
Relationship between sin and cos
Explanation:
There are many of them. Here are a few:

They are the projections of an variable arc x on the 2 xaxis and yaxis of the trig circle.

Trig identity: sin^2 x + cos ^2 x = 1

Complementary arcs:
#sin (pi/2  x) = cos x#