Questions

MCQ(1M)

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4 questions · timed · auto-graded

MCQ 11 Mark
$\frac{\cos 28^{\circ}}{\sin 62^{\circ}}=?$
  • A
    $2$
  • B
    $-1$
  • C
    $0$
  • $1$
Answer
Correct option: D.
$1$
$\frac{\cos 28^{\circ}}{\sin 62^{\circ}} $
$=\frac{\sin \left(90^{\circ}-28^{\circ}\right)}{\sin 62^{\circ}} $
$=\frac{\sin 62^{\circ}}{\sin 62^{\circ}} $
$=1$
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MCQ 21 Mark
2 tan 45° + cos 45° – sin 45° = ?
  • A
    0
  • B
    1
  • 2
  • D
    3
Answer
Correct option: C.
2
2 tan 45° + cos 45° – sin
$=2(1)+\frac{1}{\sqrt{2}}-\frac{1}{\sqrt{2}}=2$
2
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MCQ 31 Mark
Which of the following is the value of sin 90°?
  • A
    $\frac{\sqrt{3}}{2}$
  • B
    0
  • C
    $\frac{1}{2}$
  • 1
Answer
Correct option: D.
1
1
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MCQ 41 Mark
Which of the following statements is true?
  • sin θ = cos (90 – θ)
  • B
    cos θ = tan (90 – θ)
  • C
    sin θ = tan (90 – θ)
  • D
    tan θ = tan (90 – θ)
Answer
Correct option: A.
sin θ = cos (90 – θ)
sin θ = cos (90 – θ)
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MCQ(1M) - Maths STD 9 Questions - Vidyadip