Answer
Find out the value of x.
To prove
By using the trignometric identity

As given in the diagram.

Perpendicular = x
Hypotenuse = 6
Put in the above identity


Put in the above

x = 4.6 cm (Approx)
Therefore Option (c) is correct .
Sorry if i am wrong but it's 40
-15=-15
Since both sides equal, they are infinitely many solutions
D) infinitely many solutions
Answer:
15+15+15+2+2+2+2=(3×15)+(4×2)=45+8=53