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If cos X = a/b, then sin X is equal to:(
  • a)
    (b2-a2)/b
  • b)
    (b-a)/b
  • c)
    √(b2-a2)/b
  • d)
    √(b-a)/b
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
If cos X = a/b, then sin X is equal to:(a)(b2-a2)/bb)(b-a)/bc)√(...
Answer: (c) √(b2-a2)/b
Explanation: cos X = a/b
By trigonometry identities, we know that:
sin2X + cos2X = 1
sin2X = 1 – cos2X = 1-(a/b)2
sin X = √(b2-a2)/b
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