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What is the value of {[sin (x + y) – 2 sin x + sin (x – y)]/[cos (x – y) + cos (x + y) – 2 cos x]} × [(sin 10x – sin 8x)/(cos 10x + cos 8x)]?
What is the value of sin (B – C) cos (A – D) + sin (A – B) cos (C – D) + sin (C – A) cos (B – D)?
What is the value of [sin (90– 10θ) – cos (p – 6θ)]/ [cos (p/2 – 10θ) – sin (p – 6θ)]?
What is the value of {sin (90 – x) cos [π – (x – y)]} + {cos (90 – x) sin [π – (y – x)]}?
What is the value of cos (90 – B) sin (C – A) + sin (90 + A) cos (B + C) – sin (90 – C) cos (A + B)?
What is the value of [1 – tan (90 – θ) + sec (90 – θ)]/[tan (90 – θ) + sec (90 – θ) + 1]?
What is the value of [(sin 7x – sin 5x)÷(cos 7x + cos 5x)] – [(cos 6x – cos 4x)÷(sin 6x + sin 4x)]?
What is the value of [sin (90 – A) + cos (180 – 2A)]/[cos (90 – 2A) + sin (180 – A)]?
What is the value of cos [(180 – θ)/2] cos [(180 – 9θ)/2] + sin [(180 – 3θ)/2] sin [(180 – 13θ)/2]?
The complete solution of the current in the sinusoidal response of R-L circuit is? +V/√(R2+(ωL)2) cos⁡(ωt+θ-tan-1)⁡(ωL/R)) b) i = e-t(R/L)-V/√(R2+(ωL)2) cos⁡(ωt+θ-tan-1)⁡(ωL/R)) c) i = e-t(R/L)-V/√(R2+(ωL)2) cos⁡(ωt+θ-tan-1)⁡(ωL/R)) d) i = e-t(R/L)+V/√(R2+(ωL)2) cos⁡(ωt+θ-tan-1)⁡(ωL/R))