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trigonometric question..
(In 10th board exam 2020)
Answers
Step-by-step explanation:
MCQs based on the important concepts and topics of Chapter 9-Applications of Trigonometry of Class 10 Maths NCERT are provided here. All the questions are provided with answers and their detailed explanations. Students should practice with all these questions to brush up their concepts and get prepared to attempt the objective type questions appropriately in the CBSE Class 10 Maths Exam 2020.
Check below the solved MCQs from Class 10 Maths Chapter 9 Applications of Trigonometry:
1. If the length of the shadow of a tower is increasing, then the angle of elevation of the sun
(A) is also increasing
(B) is decreasing
(C) remains unaffected
(D) Don’t have any relation with length of shadow
Answer: (B)
Explanation: Observe the following figure, Let A represents sun, then as the length of shadow increases from DC to DB , the angle of elevation decreases from 60 to 30.
CBSE 10th Maths Exam 2020: Important MCQs from Chapter 9 Applications of Trigonometry with Detailed Solutions
2. The angle of elevation of the top of a tower is 30°. If the height of the tower is doubled, then the angle of elevation of its top will