Using principle value, evaluate the following : from Mathematic

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 Multiple Choice QuestionsShort Answer Type

11. Find the values of each of the expressions tan to the power of negative 1 end exponent open parentheses tan space fraction numerator 3 straight pi over denominator 4 end fraction close parentheses.


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12. Using principle value, evaluate the following :

cos to the power of negative 1 end exponent open parentheses cos fraction numerator 2 straight pi over denominator 3 end fraction close parentheses plus sin to the power of negative 1 end exponent open parentheses sin fraction numerator 2 straight pi over denominator 3 end fraction close parentheses.


Consider space cos to the power of negative 1 end exponent open parentheses cos space fraction numerator 2 straight pi over denominator 3 end fraction close parentheses plus sin to the power of negative 1 end exponent open parentheses sin fraction numerator 2 straight pi over denominator 3 end fraction close parentheses equals space cos to the power of negative 1 end exponent open square brackets cos fraction numerator 2 straight pi over denominator 3 end fraction close square brackets plus sin to the power of negative 1 end exponent open square brackets sin open parentheses straight pi minus straight pi over 3 close parentheses close square brackets
space space space space space space space space space space space space space space space space space equals space cos to the power of negative 1 end exponent open square brackets cos fraction numerator 2 straight pi over denominator 3 end fraction close square brackets plus sin to the power of negative 1 end exponent open square brackets sin straight pi over 3 close square brackets
space space space space space space space space space space space space space space space space space equals space fraction numerator 2 straight pi over denominator 3 end fraction plus straight pi over 3 equals straight pi
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13.

Find the value of each of the following :

(i) sin (sin–1x + cos–1.x) (ii) cos (sec–1x + cosec–1x). | x | ≥  1

 

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14. Find the principal value of sin–1  open parentheses fraction numerator 1 over denominator square root of 2 end fraction close parentheses.
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15. Find the principal value of cot–1 open parentheses negative fraction numerator 1 over denominator square root of 3 end fraction close parentheses
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16. Find the principal values of the following

sin to the power of negative 1 end exponent open parentheses negative 1 half close parentheses
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17. Find the principal values of the following

cos to the power of negative 1 end exponent open parentheses fraction numerator square root of 3 over denominator 2 end fraction close parentheses
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18. Find the principal values of the following

cosec-1(2)

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19. Find the principal values of the following

tan to the power of negative 1 end exponent left parenthesis negative square root of 3 right parenthesis

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20. Find the principal values of the following

cos to the power of negative 1 end exponent open parentheses negative 1 half close parentheses

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