Question

the above graph corresponds to which equation??
plzz answer with explanation.. and i 'll mark u brainliest .. answer is c option i.e. y=cos 3x but how..??????​

Answer 1

Explanation:

Ans is simple

Trick

• We know the graph when coming from top represent cosine (or put the value 0 and you will get the macimum value for the graph )
• cos function provide the value zero for 90 degree so check the graph where the line touches the graph
• we get pi / 6 put it in all option or after many practice you will get directly