Question

sec^2 50∘−cot^2 40∘=1​

Answer 1

Step-by-step explanation:

sec^2 50°-cot^2 40°=1

sec^2 (90-40)-cot^2 40=1

cosec^2 40-cot^2 40=1. [sec(90-å)=cosecå]

1=1. [cosec^2å-cot^2å=1]

LHS = RHS

Answer 2

Answer:

Here is the answer

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