Question

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Answer 1

Answer:

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Step-by-step explanation:

    AC² = 4²+3²  (Pythagoras theorem)

⇒  AC² = 16 + 9 = 25

⇒  AC = √25 = 5

(i) sin A = BC/AC = 4/5

(ii) cos A = AB/AC = 3/5

(iii) cot A =cos A / sin A = (3/5) / (4/5) = 3/4

(iv) sec C = 1/cos C = 1/(4/5) = 5/4

(v) cosec C = 1/sin C = 1/(3/5) = 5/3

(vi) tan C = sin C / cos C = (3/5) / (4/5) = 3/4

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Answer 2

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