For the given figure, which of the following conditions is true : 1. cot γ cot β 2. cot γ cot α 3. cot β cot α 4. cot β cot γ

From figure, cot α = cot β = cot γ = Since, AB AC AD ∴ cot γ cot β cot α Hence, Option 1 is the correct option.

Use tables to find the acute angle θ, if the value of cos θ is :
(i) 0.9848
(ii) 0.9574