Q. 12 A34.0( 9 Votes )

# The value of {cos(40° + θ) - sin(50° - θ)} isA. 2cosθB. 7sinθC. 0D. 1

Given, cos(40° + θ) - sin(50° - θ)

[cos(90° - θ) = sinθ ]

cos(90° - (50° - θ)) - sin(50° - θ)

sin(50° - θ) - sin(50° - θ)

= 0

Option C is the correct as the value of cos(40° + θ) - sin(50° - θ) is 0

Option A is incorrect, since it does not match the value

Option B is incorrect, since it does not match the value

Option D is incorrect, since it does not match the value

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