In a \[\Delta \mathbf{ABC},\] \[\mathbf{BCA}=\mathbf{9}{{\mathbf{0}}^{{}^\circ }}\] and CD is perpendicular to AB If \[\mathbf{AD}=\mathbf{4}\]cm and \[\mathbf{BD}=\mathbf{9}\]cm, then the value of CD will be

In a \[\Delta \mathbf{ABC},\] \[\mathbf{BCA}=\mathbf{9}{{\mathbf{0}}^{

1.	In a \[\Delta \mathbf{ABC},\] \[\mathbf{BCA}=\mathbf{9}{{\mathbf{0}}^{{}^\circ }}\] and CD is perpendicular to AB If \[\mathbf{AD}=\mathbf{4}\]cm and \[\mathbf{BD}=\mathbf{9}\]cm, then the value of CD will be
A.	\[\sqrt{18}\] cm
B.	\[\sqrt{20}\] cm
C.	8 cm
D.	6 cm
Answer» E.

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In a \[\Delta \mathbf{ABC},\] \[\mathbf{BCA}=\mathbf{9}{{\mathbf{0}}^{{}^\circ }}\] and CD is perpendicular to AB If \[\mathbf{AD}=\mathbf{4}\]cm and \[\mathbf{BD}=\mathbf{9}\]cm, then the value of CD will be

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