" (iv) "tan(-246^(@))

sin225^(@)=sin(180^(@)+45^(@))=-sin45^(@)=-(1)/(sqrt(2)) cos246^(@)=cos(180^(@)+66^(@))=-cos66^(@)=-0.4067 tan211^(@)=tan(180^(@)+31^(@))=tan31^(@)=0.6009 .

Find the value of : (sec17^@)/(cosec73^@)+(tan68^@)/(cot22^@)+cos^244^@+cos^246^@ .

Using section formula prove that the three points (-4,6,10) ,(2,4,6) and (14,0,-2) are collinear

If A= [(1,2,3),(4,1,-1),(2,4,6)] ,find det (A^(T))

Using section formula prove that the three points (-4,6,10),(2,4,6) and (14,0,-2) are collinear

Find the adjoint and inverse of each of the following matrices : A = [(1,2,-1),(2,4,6),(1,1,-2)]

Give structure 2,4,6- trichlorophenol