Question

find the principle value of tan-1(-1) plz fast don't spam

Answer 1

Answer:

-pie/4

Step-by-step explanation:

let y=tan-1(-1)

y=-1

tan y = tan(-π/4)

range of principal value of tan -1 is (π/2,-π/2)

HENCE,principal value of tan -1(-1) is -π/4

HOPE IT HELPS YOU

Answer 2

Answer:

mark as brainliest... plz