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3. Trigonometric Functions
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Q21 of 51 Page 54

Prove that: .









Hence, Proved.


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19

If , and α and β lies between 0 and . Show that: .

20

If and Find value of .

22

Prove that:

cos 3A + cos 5A + cos 7A + cos 15 A = 4 cos 4 A cos 5 A cos 6 A

23

Sushant reads part of a book in 1 hour. How much part of the book will he read in hours?

Questions · 51
3. Trigonometric Functions
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