Page 74 - Mathematics Class - X

Assertion-Reason Based Questions
Assertion-Reason Based Questions
Directions for Questions 1 to 2: In each of the questions given below, there are two statements marked
as Assertion (A) and Reason (R). Mark your answer as per the codes provided below:
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.

(d) A is false but R is true.
Q. 1. Assertion (A) : The value of sin 60° cos 30° + cos 60° sin 30° is equal to 1.
Reason (R) : sin 90° = 1 and cos 90° = 0
Q. 2. Assertion (A) : In a right-angled triangle ABC, right angled at B, if tan A = 1, then 2 sin A cos A = 1
Reason (R) : cosec A is the abbreviation used for cosecant of angle A.

Crossword Puzzles
Crossword Puzzles

Complete the following crossword puzzles with the help of given hints.
Down
1. 2.
1. The longest side of right-angled triangle is

3. ___________.
2. The value of tanA increases as A ___________.

3. There are two ___________ angles in a right-
4. angled triangle.
5.
Across

4. Trigonometry stands for right angled ___________.

5. Trigonometry creates the relation between side
and ___________.

Answers

Case-Study Based Questions: 1. (b) 2. (c) 3. (d) 4. (b)

Assertion-Reason Based Questions: 1. (b) 2. (b)

Crossword: Down: 1. hypotenuse 2. Increases 3. Acute
Across: 4. Triangle 5. Angle

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