if sec θ = 3/2, then the value of 2 cos^2 θ + 2 cot^2 θ - 9
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Step-by-step explanation:
secθ = 3/2
cosθ = 2/3
cotθ = 2/√5
2cos²θ + 2cot²θ - 9
=> 2 × (2/3)² + 2 × (2/√5)² - 9
=> 8/9 + 8/5 - 9
=> - 293/45
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