if tan theta + cot theta equal to 16 the value of tan square theta + cot square theta is
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tanA + cotA = 16
(tanA + cotA)² = 16²
tan²A + cot²A + 2cotAtanA = 256
tan²A + cot²A = 256 - 2(1) [ as tan*cot = 1]
tan²A + cot²A = 254
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