Answer:
sec θ
Explanation:
cos θ + sin θ tan θ
= cos θ + sin θ (sin θ / cos θ)
= cos θ + (sin²θ)/cos θ
= cos θ + (1 - cos²θ) / cosθ
= cos θ + 1/cos θ - cos²θ/cos θ
= cos θ + 1/cos θ - cos θ
= 1/cos θ
= sec θ
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