Math, asked by ursyuvika, 11 months ago

find the principal value of tanx=-1​

Answers

Answered by tanyamaryam27
2

Step-by-step explanation:

tanx=-1

=> tanx = -tan( pie/4)

=> tanx = tan(3pie /4 ) and tanx= tan (7pie /4)

=> x= 3pie/4 and x= 7 pie /4

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