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Questions and Answers
What is the formula to find the area of a circle?
What is the formula to find the area of a circle?
- A = 1/2Ï€r^2
- A = πr^2 (correct)
- A = 2Ï€r
- A = πr
Which trigonometric ratio is equal to the opposite side divided by the hypotenuse in a right-angled triangle?
Which trigonometric ratio is equal to the opposite side divided by the hypotenuse in a right-angled triangle?
- Cosine
- Tangent
- Cosecant
- Sine (correct)
What is the value of 'i' in the equation x^2 + 1 = 0, where 'i' is the imaginary unit?
What is the value of 'i' in the equation x^2 + 1 = 0, where 'i' is the imaginary unit?
- i = -1
- i = 0
- i = 1
- i = √(-1) (correct)
