Find x giving your answer to 1 decimal place

asked Jan 23, 2022 190k views

3 votes

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6 votes

Answer:

x is 10.8 cm

Explanation:

from Lami's theorem:

$(7)/( \sin(40 \degree) ) = (x)/( \sin(81 \degree) ) \\ \\ x = (7 \sin(81 \degree) )/( \sin(40 \degree) ) \\ \\ x = 10.8 \: cm$

4.3k points

3 votes

Explanation:

$( \sin(81) )/(x) = ( \sin(40) )/(7) \\ x * \sin(40) = 7 * \sin(81) \\ x = (7 * \sin(81) )/( \sin(40) ) = 10.75 = 10.8 \: cm$

Thanhpk answered Jan 30, 2022

4.4k points

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