Answer:
6
Step-by-step explanation:
6 tan²Θ - 6 cos² Θ
= 6(tan²Θ-cos²Θ)
= 6( sin²Θ/cos²Θ - cos²Θ)
= 6( sin²Θ - 1/cos²Θ)
= 6( cos²Θ/cos²Θ)
= 6(1)
= 6
