3 years ago

How do you solve this?

1 answer:

7 0

1/sin^2 -1 = csc^2 -1 = cot^2

derive formula from formula
sin^2 + cos^2 = 1
divide both sides by sin^2
we got 1 + cot^2 = csc^2
or. csc^2 - 1 = cot^2 ... we use this

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