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trig question help (1 Viewer)

B

B1andB2

oui oui baguette
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in tri PQR
tantheta=h/a --> a=h/tantheta

in tri PRS
tantheta=b/h --> b=htantheta

therefore a x b = htantheta x h/ tantheta

tans cross out and you're left with h^2
 
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