CBSE Class 10-Mathematics: Chapter –8 Introduction to Trigonometry Part 12

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4 Mark Questions

Question 1:

Express the trigonometric ratios and in terms of .

Answer:

For

By using identity

For

By using identity

For

Question2:

Write the other trigonometric ratios of A in terms of .

Answer:

For

By using identity,

For

For

By using identify

For

For

Question3:

Evaluate:

(i)

(ii)

Answer

(i)

(ii)