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given-the-regular-pyramid-T-ABCD-with-a-square-base-length-AB-8-TC-6-point-P-is-mid-BC-if-x-is-the-angle-between-TP-and-BD-determine-the-value-of-cos-x-




Question Number 78330 by john santu last updated on 16/Jan/20
given the regular pyramid  T.ABCD with a square base  . length AB = 8 , TC = 6. point  P is mid BC. if x is the angle   between TP and BD. determine  the value of cos x.
$${given}\:{the}\:{regular}\:{pyramid} \\ $$$${T}.{ABCD}\:{with}\:{a}\:{square}\:{base} \\ $$$$.\:{length}\:{AB}\:=\:\mathrm{8}\:,\:{TC}\:=\:\mathrm{6}.\:{point} \\ $$$${P}\:{is}\:{mid}\:{BC}.\:{if}\:{x}\:{is}\:{the}\:{angle}\: \\ $$$${between}\:{TP}\:{and}\:{BD}.\:{determine} \\ $$$${the}\:{value}\:{of}\:\mathrm{cos}\:{x}. \\ $$

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