1.If A=(cosθisinθisinθcosθ)A = \begin{pmatrix} \cos\theta & i\sin\theta \\ i\sin\theta & \cos\theta \end{pmatrix}A=(cosθisinθisinθcosθ), where θ=π24\theta = \dfrac{\pi}{24}θ=24π and i=−1i = \sqrt{-1}i=−1, and A5=(abcd)A^5 = \begin{pmatrix} a & b \\ c & d \end{pmatrix}A5=(acbd), then which one of the following is not true?a.0≤a2+b2≤10 \le a^2 + b^2 \le 10≤a2+b2≤1b.a2−d2=0a^2 - d^2 = 0a2−d2=0c.a2−c2=1a^2 - c^2 = 1a2−c2=1d.a2−b2=12a^2 - b^2 = \dfrac{1}{2}a2−b2=21Login to continueOnly logged in users canattempt or see the solution.
