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Question
Prove that:
tan (55° + x) = cot (35° – x)
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Solution
tan (55° + x) = tan [90° – (35° – x)] = cot (35° – x)
RELATED QUESTIONS
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If sec θ = `25/7`, find the value of tan θ.
Solution:
1 + tan2 θ = sec2 θ
∴ 1 + tan2 θ = `(25/7)^square`
∴ tan2 θ = `625/49 - square`
= `(625 - 49)/49`
= `square/49`
∴ tan θ = `square/7` ........(by taking square roots)
Choose the correct alternative:
cot θ . tan θ = ?
