1.

Determine the smallest positive value of x (in degrees) for which tan (x+100∘)=tan(x+50∘)tan x tan (x−50∘). Prove that cos 7x−cos 8x1+2 cos 5x=cos 2x−cos 3x

Answer»

Determine the smallest positive value of x (in degrees) for which tan (x+100)=tan(x+50)tan x tan (x50).

Prove that cos 7xcos 8x1+2 cos 5x=cos 2xcos 3x



Discussion

No Comment Found