7 (a) please answer
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Answer:
Step-by-step explanation:
tan A = 1/cotA and vice versa
1+ tan²A/1+cot²A
1+tan²A/1+(1/tan²A)
tan²A(1+tan²A/1+tan²A)
tan²A
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as we know 1+tan^2A =sec^2A
1+cot^2A =cosec^2A
sec^2A/(cosec^2A) =sin^2A/(cos^2A) =tan^2A
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