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Answer:
sec θ + tan θ = 1/(2x) or 2x
Step-by-step explanation:
sec θ = x + 1/(4x) (given)
sec²θ = x² + 1/(16x²) + 2(x)(1/(4x)) [Squaring both sides]
sec²θ - 1 = x² + 1/(16x²) + 1/2 - 1 [Subtracting 1 from both sides]
tan²θ = x² + 1/(16x²) - 1/2 = (x)² + (1/(4x))² - 2(x)(1/4x) [∵sec²θ = 1 + tan²θ]
tan²θ = (x - 1/(4x))²
tanθ = ±(x - 1/(4x))² = 1/4x - x or x - 1/4x [taking both positive and negative roots]
tanθ + secθ = 1/(4x) - x + x + 1/(4x) or x - 1/(4x) + x + 1/(4x)
tanθ + secθ = 2/(4x) or 2x
tanθ + secθ = 1/(2x) or 2x
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