Mathematics · Trigonometry
If a sec(A) + b tan(A) + c = 0 and a' sec(A) + b' tan(A) + c' = 0, then (bc' - b'c)2 - (ca' - c'a)2 is equal to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1(ab + a'b')2
- 2(a'b + ab')2
- 3(ab' - a'b)2✓
- 4(ab - a'b')2
Correct answer
(ab' - a'b)2
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