What is the value of cosec(65° + θ) - sec(25° - θ) + tan²20° - cosec²70°?

A. -1

B. 0

C. 1

D. 2

Answer: Option A

Solution(By Examveda Team)

cosec(65° + θ) - sec(25° - θ) + tan²20° - cosec²70°
= sec(25° - θ) - sec(25° - θ) + tan²20° - sec²20°
= tan²20° - sec²20°
= -1