in figure, angle MNP=90 degree seg NQ perpendicular to seg MP MQ=9 QP=4 find NQ
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MN^2 + NP^2 = 169
MN^2 = 81+X^2
NP^2=16+X^2
81+2X^2+16=169
SO x =6
MN^2 = 81+X^2
NP^2=16+X^2
81+2X^2+16=169
SO x =6
Answered by
13
Answer:
Hello.......☺☺
Step-by-step explanation:
In ∆MNP, ∠ MNP = 900,
By Pythagoras theorem,
MN2 + NP2 = MP2
⇒ MN2 + NP2 = (MQ + QP)2
⇒ MN2 + NP2 = (13)2
⇒ MN2 + NP2 = 169 … (1)
In ∆MQN, ∠MQN = 900,
QN2 + MQ2 = MN2
⇒ QN2 + 92 = MN2
⇒ QN2 + 81 = MN2 …(2)
In ∆PQN, ∠PQN = 900,
QN2 + PQ2 = PN2
⇒ QN2 + 42 = PN2
⇒ QN2 + 16 = PN2 … (3)
Now (2) + (3)
⇒ QN2 + 81 + QN2 + 16 = MN2 + PN2
⇒ 2QN2 + 97 = 169 [from(1)]
⇒ 2QN2 = 72
⇒ QN2 = 36
Thus NQ = 6.
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