Home
Class 11
MATHS
sin(45^@+A)sin(45^@-A)=1/2cos2A....

`sin(45^@+A)sin(45^@-A)=1/2cos2A.`

Promotional Banner

Similar Questions

Explore conceptually related problems

2sin45^(@)cos45^(@)

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)

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

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

Prove that: sin(45^(@)-A)=1/2cos2A

What is the value of (1/(sin45^@)-sin45^@) (1/(cos 45^@)-cos45^@)(tan45^@+1/(tan45^@)) ?

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

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

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