RRB NTPC · Question 93
Evaluate: (sinθ/cosθ) × (cotθ/cosecθ)
Show answer & explanation
Answer: (B) sinθ
Explanation
cotθ / cosecθ = (cosθ/sinθ) × sinθ = cosθ. So the expression = tanθ × cosθ = sinθ.
RRB NTPC · Question 93
Answer: (B) sinθ
cotθ / cosecθ = (cosθ/sinθ) × sinθ = cosθ. So the expression = tanθ × cosθ = sinθ.