Question
If sec²x + csc²x = 10, find the value of tan²x +
cot²x.Solution
Using the identities sec²x = 1 + tan²x and csc²x = 1 + cot²x, substitute: (1 + tan²x) + (1 + cot²x) = 10. Simplify: 2 + tan²x + cot²x = 10. tan²x + cot²x = 8. Correct answer: d
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There are three series given below which are following with the same pattern.
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