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3. trigonometric functions
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Q4 of 62 Page 78

Find the principal and general solutions of the following equations:

cosec x = – 2

Given equation is cosec x = -2


We know that


∴


⇒


∴ the principal solutions are


Now considering


⇒


⇒


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2

Find the principal and general solutions of the following equations:

sec x = 2

3

Find the principal and general solutions of the following equations:

cot x = - √3

5

Find the general solution for each of the following equations:

cos 4 x = cos 2 x

6

Find the general solution for each of the following equations:

cos 3x + cos x – cos 2x = 0

Questions · 62
3. trigonometric functions
1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 10
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