[" 18.If "0<=theta<=90^(@)" and "4cos^(2)theta-4sqrt(3)cos theta+3=0" then "],[" the value of "theta" is "]

" if " f(0) = |{:(sin 0 ,,cos 0,,sin 0),(cos0,,sin0,,cos0),(cos0,, sin 0,,sin 0):}| then

" if " f(0) = |{:(sin 0 ,,cos 0,,sin 0),(cos0,,sin0,,cos0),(cos0,, sin 0,,sin 0):}| then

" if " f(0) = |{:(sin 0 ,,cos 0,,sin 0),(cos0,,sin0,,cos0),(cos0,, sin 0,,sin 0):}| then

The inverse of [[0, 0, 1], [0, 1, 0], [1, 0, 0]] is

If A=[[0, 1, 0], [1, 0, 0], [0, 0, 1]] , then A^(-1)=

If A=[[a, 0, 0], [0, a, 0], [0, 0, a]] , then |A||adjA|=

If A=[[a, 0, 0], [0, a, 0], [0, 0, a]] , then |adjA|=

If A={:[(a,0,0),(0,a,0),(0,0,a)],:}" then: "|A|*|adj.A|=

If A={:[(a,0,0),(0,a,0),(0,0,a)],:}" then: "|A|*|adj.A|=

If {:A=[(a,0,0),(0,b,0),(0,0,c)]:}," then "A^(-1) , is..... a) [(a,0,0),(0,(1)/(b),0),(0,0,c)] b) [((1)/(0),0,0),(0,(1)/(b),0),(0,0,c)] c) [(a,0,0),(0,(1)/(b),0),(0,0,(1)/(c))] d) [((1)/(a),0,0),(0,(1)/(b),0),(0,0,(1)/(c))]