alondranicole20oa alondranicole20oa

09-03-2020
Mathematics

contestada

Find cos x if
SIN^2 x-1/COS x= -1

a. -1
b. 2
c. 1
d. 0

Respuesta :

Wallind11 Wallind11

09-03-2020

Step-by-step explanation:

sin²x-1/cosx= -1

cosx=-(sin²x-1)

cosx=1-sin²x

cosx=cos²x

cosx=1

so option C is the correct answer

Answer Link

Smartgnome Smartgnome

06-01-2021

Answer:

The correct answer is C. 1

Step-by-step explanation:

Answer Link

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