Скачать или смотреть Class 10 Maths | Trigonometry Ex 8.1 Q11 | True or False with Reason | NCERT

In this video, we solve NCERT Class 10 Mathematics – Chapter 8: Introduction to Trigonometry, Exercise 8.1, Question 11 step by step.

📌 Question:
State whether the following statements are True or False. Justify your answer.

(i) The value of tan A is always less than 1.
(ii) sec A = 12/5 for some value of angle A.
(iii) cos A is the abbreviation used for the cosecant of angle A.
(iv) cot A is the product of cot and A.
(v) sin θ = 4/3 for some angle θ.

🔍 Concepts used (NCERT logic):
• Range of trigonometric ratios
• Definitions of sin, cos, tan, sec, cosec, cot
• Understanding impossible values of trigonometric ratios
• Proper mathematical justification (not guessing)

🧠 Board exam tip:
In True/False with reason questions, justification is compulsory.
A correct statement without reasoning may still lose marks.

📘 Best for:
✔ CBSE & State Board exams
✔ Concept clarity
✔ Assertion / reasoning questions

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