Podcast
Questions and Answers
What is the sum of the roots of the equation $3x^2 - 7x + 2 = 0$?
What is the sum of the roots of the equation $3x^2 - 7x + 2 = 0$?
- 7
- 2/3
- 1/3 (correct)
- None of the above
In a right-angled triangle, if one acute angle is double the other, and the hypotenuse is of length 10 cm, what is the length of the shorter side?
In a right-angled triangle, if one acute angle is double the other, and the hypotenuse is of length 10 cm, what is the length of the shorter side?
- 6 cm
- 5 cm
- 3 cm (correct)
- 4 cm
If $ an heta = rac{3}{4}$, which trigonometric ratio is equal to $rac{1}{ an heta}$?
If $ an heta = rac{3}{4}$, which trigonometric ratio is equal to $rac{1}{ an heta}$?
- $rac{1}{ an heta}$
- $ an heta$ (correct)
- $rac{4}{3}$
- $rac{3}{4}$
Flashcards
Sum of roots of quadratic equation
Sum of roots of quadratic equation
The sum of the roots of a quadratic equation in the form ax² + bx + c = 0 is -b/a.
Right triangle, acute angle relationship
Right triangle, acute angle relationship
If an acute angle in a right-angled triangle is double another, the sides are in a 1:√3 ratio.
Reciprocal of tangent
Reciprocal of tangent
The reciprocal of the tangent of an angle is the cotangent of that angle.
Study Notes
Quadratic Equation
- The equation 3x^2 - 7x + 2 = 0 has roots that sum up to a certain value.
Right-Angled Triangle
- In a right-angled triangle, one acute angle is double the other.
- The length of the hypotenuse is 10 cm.
- The length of the shorter side can be calculated using this information.
Trigonometric Ratio
- If an heta = 3/4, then the reciprocal is equal to a certain trigonometric ratio.
- The trigonometric ratio is equal to 1 / an heta.
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Description
Test your knowledge of ML Aggarwal Class 9 Maths with questions from chapters 1, 4, 5, 6, 7, 8, 10, 11, 13, 15, 16, 17, 18, and 20. Solve mathematical equations and geometry problems to assess your understanding.
