Maths MCQs Class 11 – Pakistan MCQs Test | NTS, FPSC, PPSC, SPSC, KPPSC, CSS Questions

In a ΔABC , Sin α/2 =?

(A)

(B)

(C)

(D)

Answer:

(A)

(A) π/3 , 2π/3
(B) π/6 , 5π/6
(C) π/2, -π/2
(D) π/4 , -π/4

Answer: (B) π/6 , 5π/6

If ( a + b )¹¹ , then it will contain:
(A) 11 terms
(B) 13 terms
(C) 10 terms
(D) 12 terms

Answer: (D) 12 terms
If ( a + b )13 , then the expression has n+1 terms, so ( a + b )13 has 12 terms.

If ( a + b )¹³, then middle terms/middle term will be :
(A) 7th term & 8th term
(B) 8th term & 9th term
(C) 7th term
(D) 8th term

Answer: (A) 7th term & 8th term

(A) a² =b² + c²– bc Cosα
(B) a²=b² + c² + 2bc Cosα
(C) b² =a² + c² – bc Cosα
(D) a² =b² + c² – 2bc Cosα

Answer: (D) a² =b² + c² – 2bc Cosα