Advertisements
Advertisements
Question
Evaluate the following:
`\text(cosec)^-1(-2/sqrt3)+2cot^-1(-1)`
Sum
Advertisements
Solution
`\text(cosec)^-1(-2/sqrt3)+2cot^-1(-1)=\text(cosec)^-1[\text(cosec)-pi/3)]+2cot^-1[cot((3pi)/4)]`
`=-pi/3+2xx(3pi)/4`
`=-pi/3+(3pi)/2`
`=(7pi)/6`
shaalaa.com
Is there an error in this question or solution?
