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  1. The value of sin²22° + sin²68° + cot²30° is
    1. 4
    2. 3
    3. 3
      4
    4. 5
      4
Correct Option: A

sin²22° + sin²68° + cot²30°
= sin²22° + sin² (90° – 22°) + (√3)²
= sin²22° + cos²22° + 3 [∵ sin²θ + cos²θ = 1]
= 1 + 3 = 4


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