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Without using tables, give the value of ...

Without using tables, give the value of each of the following :
`cos330^(@)`

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The correct Answer is:
`-sqrt(3)`
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ICSE-TRIGONOMETRICAL FUNCTIONS -Exercise 4(d)
  1. Express the following as functions of angles less than 45^(@) : "cos...

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  2. Without using tables, give the value of each of the following : sin1...

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  3. Without using tables, give the value of each of the following : cos3...

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  4. Without using tables, give the value of each of the following : sec2...

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  5. Without using tables, give the value of each of the following : cos3...

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  6. Without using tables, give the value of each of the following : "cos...

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  7. Without using tables, give the value of each of the following : cos8...

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  8. Without using tables, give the value of the following : sin4530^(@)

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  9. Without using tables, give the value of the following : "sec"(15pi)...

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  10. With the help of tables, find the values, correct to places of decimal...

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  11. With the help of tables, find the values, correct to places of decimal...

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  12. With the help of tables, find the values, correct to places of decimal...

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  13. With the help of tables, find the values, correct to places of decimal...

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  14. With the help of tables, find the values, correct to places of decimal...

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  15. Find the value of sin 750^(@)cos300^(@)+cos1470^(@)sin(-1020^(@))

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  16. Evaluate (cos3 theta-2cos 4theta)/(sin 3 theta+2sin 4theta), when thet...

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  17. Simplify : (cos(-theta))/(sin (90^(@)+theta))

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  18. (tan(-theta))/(sin(540^(@)+theta))

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  19. (sin(90^(@)-theta)sec(180^(@)-theta)sin(-theta))/(sin(180^(@)+theta)co...

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  20. (sin150^(@)-5cos300^(@)+7tan 225^(@))/(tan 135^(@)+3sin 210^(@))

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