What is the value of sin (B – C) cos (A – D) + sin (A – B) cos (C – D) + sin (C – A) cos (B – D)?
If 2y . cos θ - x . sin θ = 0 and 2x . sec θ - y . cosec θ = 3, what is the value of x² + 4y²?
Evaluate 3sin x – 4 sin3 x and figure out the correct answer from below option ?
The value of sec2 45˚ + 2 tan 135˚ is –
If x tan 60° + cos 45° = sec 45° then the value of x2 + 1 is
If asinx +b cosx = c then find the value of acosx - bsinx =?
If θ is a positive acute angle and cos² θ + cos⁴θ = 1, then the value of tan²θ + tan⁴θ is?
