Q) 18 & 20 please answer.

Mathematics

1 answer:

Setler [38]2 years ago

5 0

18. S=r^2-t^2
S+t^2=r^2
r=sqrt(S+t^2)
20. Tan 18=x/12
x=12×Tan 18
x=3.899036355
x=3.90

I hope this helps.

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