speedymgm speedymgm

29-10-2019
Mathematics

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Which of the following expressions is equal to -1? Help plzzz

Which of the following expressions is equal to 1 Help plzzz class=

Respuesta :

aachilovv aachilovv

29-10-2019

Answer:

Sec 90

Step-by-step explanation:

Sec 90 is equals to -1

Answer Link

Moonnose Moonnose

29-10-2019

Answer:

csc 270°

Step-by-step explanation:

sec 90° = 1/cos 90° = 1/0 which is undefined

sin 180° = 0

csc 270° = 1/sin 270° = 1/-1 = -1

Answer Link

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