Math, asked by annu347, 1 year ago

find the value of cosec(-690°)

annu347: thanks :)

Answers

Answered by mehul1045

21

cosec(- 690°) = 1/sin(- 690°) = 1/sin[720°+(- 690°)] = 1/sin30° = 2

annu347: wlcm:)

annu347: thanks

annu347: i already wlcm you

Answered by Anonymous

23

cosec(-690) = -cosec690 = -cosec(720-30) = cosec30 = 2

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