Question

pls, help!!!!
inverse trigonometry question

Answer 1

ques. no. 20

Answer 2

actually i solved it and only got one value of x , but there are two values of x

Answer 3

May I see your work?

Answer 4

i hope u will understand my handwriting

Answer 5

In the first line, while converting sin inverse to tan inverse, there seems to be a mistake

Answer 6

yeah.. i noticed it now
base should be , \[\sqrt{{-x ^{2}-x}}\]

Answer 7

after correction i got the eq...
\[x ^{4} + 2x ^{3} - x -1 = 0\]
can u pls. tell me the solution of this equation, if it is correct