CBSE Class 10-Mathematics: Chapter – 8 Introduction to Trigonometry Part 6 (For CBSE, ICSE, IAS, NET, NRA 2022)

Get top class preparation for CBSE right from your home: fully solved questions with step-by-step explanation- practice your way to success.

Question 10:

If , prove that .

Answer:

Given:

Question11:

If , where is an acute angle, find the value of A.

Answer:

Given:

Question12:

If A, B and C are interior angles of a , then show that

Answer:

Given: A, B and C are interior angles of a .

Question13:

Express in terms of trigonometric ratios of angles between and

Answer:

Question14:

Express the trigonometric ratios and in terms of .

Answer:

For ,

By using identity

For

By using identity

For