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Question

In the given figure, B=90 and ADB=x, then find sinCAB.
188070_5ca5093f64ed48988ec4e47c0a826b4f.png

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Solution

In CAB,

CA=20 and AB=12

Using Pythagoras theorem,
CA2=AB2+BC2

202=122+BC2

BC=16
sinCAB=PH=BCAC=1620=45

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