Fill in the blank with the most appropriate word from the options given below:
Riya found the height of the school water tank from the length of its shadow and the angle of the sun, using what she had learnt in ______.
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Trigonometry
Complete sentence: Riya found the height of the school water tank from the length of its shadow and the angle of the sun, using what she had learnt in trigonometry.
| Word | Meaning | Example |
|---|---|---|
| (1) Trigonometry (answer) | the branch of mathematics that deals with the sides and angles of triangles | Engineers use trigonometry to work out how steep a hill road can be. |
| (2) Algebra | the branch of mathematics that uses letters such as x and y in place of numbers | In the algebra test, we had to find the value of x in each equation. |
| (3) Calculus | the branch of mathematics that studies how things change, such as speed and rate of growth | Aman found calculus hard in Class 12 but enjoyed it in college. |
| (4) Arithmetic | the basic work with numbers: adding, subtracting, multiplying and dividing | The shopkeeper did the arithmetic in his head faster than the calculator. |