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Can pls someone help me plsss I need help :(

Can pls someone help me plsss I need help :(-example-1
User Nikvs
by
7.5k points

1 Answer

3 votes

Answer:
7,5.66,39^(\circ)

Explanation:

Given


IJ=9\\\angle I=51^(\circ)

from figure, we can write


\Rightarrow \sin 51^(\circ)=(HJ)/(9)\\\\\Rightarrow HJ=9\sin 51^(\circ)=6.99\approx 7


\Rightarrow \cos 51^(\circ)=(HI)/(9)\\\Rightarrow HI=9\cos 51^(\circ)\\\Rightarrow HI=5.66

In right angle trianle, the sum of the remaining two angles is
90^(\circ)


\therefore 51^(\circ)+\angle J=90^(\circ)\\\Rightarrow \angle J=90^(\circ)-51^(\circ)\\\Rightarrow \angle J=39^(\circ)

User Vinoths
by
8.4k points

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