**2. The value of 152(sin 30ᵒ + 2 cos**^{2} 45ᵒ + 3 sin 30ᵒ + 4cos^{2} 45ᵒ + ....+ 17 sin 30ᵒ + 18 cos^{2} 45ᵒ) is

(a) an integer but not a perfect square

(b) a rational number but not an integer

(c) a perfect square of an integer

(d) irrational

Show Answer

**Correct Answer : ****Answer: c**