Without using trigonometric tables evaluate the following cosec 39/sec 51 +2/root3×tan17×tan38tan60tan52tan73-3 (sin square31 +sin square 59)
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cosec 39 = sec 51
tan 17 = cot 73
tan 38 = cot 52
Sin square 31 + sin square 59 = 1
1 + 2/3 -3 = -4/3
tan 17 = cot 73
tan 38 = cot 52
Sin square 31 + sin square 59 = 1
1 + 2/3 -3 = -4/3
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