[" Simplify,"cos theta=[[cos theta sin theta],[sin theta cos theta]]],[sin theta=[[sin theta cos theta],[cos theta,sin theta]]]

Simplify, costheta[[cos theta, sin theta],[-sin theta, cos theta]] + sin theta [[sin theta, -cos theta],[cos theta, sin theta]]

[[ Simplify :cos thetacos theta,sin theta-sin theta,cos theta]]+sin theta[[sin theta,-cos thetacos theta,sin theta]]

cos theta/(1+sin theta)=(1-sin theta)/cos theta

" (1) "|[cos theta,-sin theta],[sin theta,cos theta]|

Evaluate |[cos theta, -sin theta], [sin theta, cos theta]|

determinant |"cos theta sin theta -sin theta cos theta

If A=[(-cos theta, sin theta),(sin theta, cos theta)] then IAI=

If f (theta) = [[cos^(2) theta , cos theta sin theta,-sin theta],[cos theta sin theta , sin^(2) theta , cos theta ],[sin theta ,-cos theta , 0]] ,then f ( pi / 7) is