Across
- 2. The angle formed by the line of sight with the horizontal line when the object is below the horizontal level is known as the angle of ______.
- 8. sin (90°-A) and cos A are ____ in value.
- 9. The section in a co-ordinate plane formed by horizontal and vertical lines determing the postion of a point is called ________
- 12. A linear equation in two variables has ______ many solutions.
- 14. The measure (in degrees) of the angle of elevation of the top of the tower 75√3m high from a point at a distance of 75m from the foot of the tower in a horizontal plane is _______.
- 15. The first and last terms of an A.P. are 1 and 11. If the sum of its terms is 36, then the number of terms (in words) will be ____.
- 16. The quadratic equation 2x² -6x +17 has ___ roots.
- 18. State whether true or false: A polynomial whose graph interests the x axis at one point has two zeroes.
- 19. In △ABC, right angled at B, the value of sin(A + C) = ______ (in words).
- 20. The graph of a linear equation is a ___ line.
Down
- 1. If there are two separate circles drawn apart from each other, then the maximum number of common points they have (in words) are ______.
- 3. A number that cannot be expressed as a fraction is known as a/an ________.
- 4. Two figures with the same size and shape are said to be ___.
- 5. State whsether true or false: 4 is the only root of the equation x² -20x +64.
- 6. Tangent lines at the end points of a diameter are _______.
- 7. The decimal expansion of the rational number ¹⁴⁵⁸⁷⁄₁₂₅₀ will terminate after ____ decimal place/places.
- 10. How many two-digit numbers are divisible by three? (Provide your answer in words.)
- 11. Another name for a co-ordinate plane is a ______ plane.
- 13. What type of triangle is always similar to other triangles of its kind?
- 17. A quadratic polynomial has at ___ two zeroes.