What is the value of cosec(65° + θ) – sec(25° - θ) + tan220° - cosec270° ?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. -1.
= cosec(65° + θ) – sec(25° - θ) + tan220° - cosec270°
= cosec(65° + θ) – cosec{90° - (25° - θ)} + tan220° - cosec270°
= cosec(65° + θ) – cosec(65° + θ) + tan220° - cosec270°
= tan220° - sec220°
= -1