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Without using trigonometric tables, evaI...

Without using trigonometric tables, evaIuate the following:`sec37^@/(cosec53^@)+2cot15^@cot25^@cot45^@cot75^@cot65^@-3(sin^2 18^@+sin^2 72^@)`

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R G PUBLICATION-MODEL PAPER 1-EXERCISE
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