mahimarahman5678 mahimarahman5678

21-10-2020
Mathematics

contestada

Pleaseeee help with this question

prove (1-cos^2A)csc^2A=1

Respuesta :

LammettHash LammettHash

21-10-2020

For all x,

sin²(x) + cos²(x) = 1

so we have

(1 - cos²A) csc²A = sin²A csc²A

and since csc(x) = 1 / sin(x), so the expression reduces to 1.

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