If A(theta)=[[sintheta, icostheta], [ico...

If `A(theta)=[[sintheta, icostheta], [icostheta, sintheta]]` , then which of the following is not true? `(a)` `A(theta)^(-1)=A(pi-theta)` `(b)` `A(theta)+A(pi+theta)` is a null matrix `(c)` `A(theta)^(-1)` is invertible for all `theta in R` `(d)` `A(theta)^(-1)=A(-theta)`

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