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Find the value of cos(270° + θ) + sin(180° + θ) + tan(225°) + sec(90° + θ) + cosec(180° - θ).
1. -1
2. -2
3. 1
4. 2

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Correct Answer - Option 3 : 1

Formula used :

cos(270° + θ) = sinθ 

sin(180° + θ) = -sinθ 

 tan(180° + θ) = tanθ

 sec(90° + θ) = -cosecθ 

 cosec(180° - θ) = cosecθ

Calculations :

cos(270° + θ) + sin(180° + θ) + tan(225°) + sec(90° + θ) + cosec(180° - θ)

⇒ sinθ + (-sinθ) + tan45° + (-cosecθ) + cosecθ 

⇒ sinθ - sinθ + tan45° - cosecθ + cosecθ

⇒ tan45° 

⇒ 1 

∴ Option 3 will be the correct answer

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