Home
Class 11
MATHS
cos ( 45^(@) +A) cos ( 45^(@) -B)-sin (4...

`cos ( 45^(@) +A) cos ( 45^(@) -B)-sin (45^(@) +A) sin (45^(@) -B) ` बराबर है|

Promotional Banner

Similar Questions

Explore conceptually related problems

cos (45 ^ (@) - A) cos (45 ^ (@) - B) -sin (45 ^ (@) - A) sin (45 ^ (@) - B) = sin (A + B)

cos 45^(@)-sin 45^(@)=?

( cos (45^(@) + A) - cos (45^(@) - A))/( sin (120^(@) + A)-sin(120^@-A))=

Prove that: cos(45^(@)-A)cos(45^(@)-B)-sin(45^(@)-A)sin(45^(@)-B)=sin(A+B)

Prove that: i) sin(A+B)cos(A-B)-cos(A+B)sin(A-B)=sin2B ii) cos(45^(@)-A)cos(45^(@)-B)-sin(45^(@)-A)sin(45^(@)-B)=sin(A+B)

Prove that: i) sin(A+B)cos(A-B)-cos(A+B)sin(A-B)=sin2B ii) cos(45^(@)-A)cos(45^(@)-B)-sin(45^(@)-A)sin(45^(@)-B)=sin(A+B)

cos (A +B) + sin (A -B) = 2 sin (45 ^(@) + A) cos ( 45 ^(@) + B).

(cos (45 ^ (@) + A) -cos (45 ^ (@) - A)) / (sin (120 ^ (@) + A) -sin (120 ^ (@) - A)) =

sin^(2)45^(@)+cos^(2)45^(@)=

sin 45^(@)(cos 45^(@)) =…………..