3 years ago

(__)^2=(csc x-1)(csc x+1)

2 answers:

8 0

(csc x-1)(csc x+1)=csc²x-1²=csc²x-1=(1/sin x)² -1=1/sin x² - sin²x/sin²x=
=(1-sin²x)/sin² x = cos² x/ sin² x = (cos x/sin x)²= (cot x)²

sukhopar [10]3 years ago

5 0

Answer:

cot x

Step-by-step explanation:

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