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Question

In an equilateral triangle ABC , match the following ratios to the values

Trignometric ratiosValues(i)tan 60(a)13(ii)cot 30(b)3(iii)cosec 30(c)2(iv)sec 30(d)23


A

(i) –a , (ii) – b , (iii) – a , (iv) – d

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B

(i) –b , (ii) – b , (iii) – c , (iv) – d

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C

(i) –a , (ii) – b , (iii) – c , (iv) – d

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D

(i) –a , (ii) – b , (iii) – c , (iv) – b

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Solution

The correct option is B

(i) –b , (ii) – b , (iii) – c , (iv) – d


Let each side of the equilateral triangle be a.

Length of perpendicular AD=3a2

tan60=tanB=ADBD = 3

cot30=cotA2 = ADBD = 3

cosec30=cosecA2 = ABBD=2

sec30=secA2 = ABAD = 23


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