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12-11-2020
Mathematics

contestada

sec²A-cosec²A=(tanA+cotA)(tanA-cotA)

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12-11-2020

Answer:

Step-by-step explanation:

Sec²A-cosec²A=(tanA+cotA)(tanA-cotA)

Tan^2A+1-cot^2A-1=(tan^2A-cot^2A)

tan^2A-cot^2A=tan^2A-cot^2A

L.H.S=R.H.S

Hence proved.

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