Prove that the product of two matricer cose cose-sine [cos e-sinesine And (and) | cos.o cos psina cos o sino sino The product of is a zero matrix if the difference between A and • is odd.

What is the bond order between C and O in CO ?

What is the bond order between C and O in CO ?

Prove that the product of matrices [cos^2thetacosthetasinthetacosthetasinthetasin^2theta] and [cos^2varphicosvarphisinvarphicosvarphisinvarphisin^2varphi] is the null matrix, when theta and varphi differ by an odd multiple of pi/2 .

Prove that the product of the matrices [[cos^2alpha, cosalphasinalpha],[cosalphasinalpha,sin^2alpha]] and [[cos^2beta,cosbetasinbeta],[cosbetasinbeta,sin^beta]] is the null matrix when alpha and beta differ by an odd multiple of pi/ 2.

Express each of the products into sums or difference of sines and cosines : 2cos3 theta*sin2 theta

Prove that the product of matrices [cos^(2)theta cos theta sin theta cos theta sin theta s in^(2)theta] and [cos^(2)varphi cos varphi sin varphi cos varphi sin varphi s in^(2)varphi] is the null matrix,when theta and varphi differ by an odd multiple of (pi)/(2) .

Express each of the products into sums or difference of sines and cosines : 2cos 9theta. Cos 4theta

Express each of the products into sums or difference of sines and cosines: cos9 theta.cos4 theta

Convert each of the following products into the sum or difference of sines and cosines: sin75^0cos15^0

Express each of the products into sums or difference of sines and cosines : 2sin5 theta*cos3 theta