if Tan a+ cot a = 2 ,then what is the value of tan²a+cot a²
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Answer:
tan²A + cot²A = 2
Step-by-step explanation:
tanA+cotA = 2
on squaring both sides,
(tanA + cotA)² = 2²
tan²A + 2 tanA.cotA + cot²A = 4
tan²A + 2 (1) + cot²A = 4
tan²A + cot²A = 4-2 = 2
tan²A + cot²A = 2
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