- y = cos x
- sin (x + π/2 ) = cos x
- y = cos x graph is the graph we get after shifting y = sin x to π/2 units to the left
- Period of the cosine function is 2π
| Max value of Graph | Min value of the graph |
| 1 at 0, 4π | -1 at 2π |
There are a few similarities between the sine and cosine graphs, They are:
- Both have the same curve which is shifted along the x-axis
- Both have an amplitude of 1
- Have a period of 360° or 2π radians
The combined graph of sine and cosine function can be represented as follows.
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