Q. 94.4( 10 Votes )

The value of (1 + A. 1

B. 2

C. 4

D. 0

Answer :

To find: (1 + cot θ − cosec θ) (1 + tan θ + sec θ)

Consider (1 + cot θ − cosec θ) (1 + tan θ + sec θ)

[∵ (a – b) (a + b) = a² – b²]

[∵ sin² θ + cos² θ = 1]

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The value of (1 + A. 1B. 2C. 4D. 0