If tan(A+B)=m and (tan A-B)=n,find tan 2A
The length of the perpendicular drawn from the points (5,4,−1) to the line r¯¯=iˆ+λ(2iˆ+9iˆ+5kˆ) is
In the given figure P is any point of diagonal AC of parallelogram ABCD ow that ar APD=ar APB
surface chemistry
Cos4x=cos2x
leave wages rate
12 class physics ncert teach