3 years ago

PLEASE HELP ME THIS IS DUE REALLY SOON AND I NEED THE ANSWER:

Mathematics

2 answers:

hodyreva [135]3 years ago

6 0

Answer:

When any value will make the expression equivalent when evaluated.

Step-by-step explanation:

kompoz [17]3 years ago

4 0

Answer:

Step-by-step explanation:

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Given the triangle below, find the length of XW . Round your answer to the nearest tenth.

Ghella [55]

Check the picture below.

so let's use the law of sines then

$\textit{Law of sines} \\\\ \cfrac{sin(\measuredangle A)}{a}=\cfrac{sin(\measuredangle B)}{b}=\cfrac{sin(\measuredangle C)}{c} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{1.9}{sin(Z)}~~ = ~~\cfrac{XZ}{sin(Y)}\implies \cfrac{1.9}{sin(89^o)}~~ = ~~\cfrac{XZ}{sin(70^o)}\implies \cfrac{1.9\cdot sin(70^o)}{sin(89^o)}=XZ \\\\[-0.35em] ~\dotfill$

$cos(21^o)=\cfrac{\stackrel{adjacent}{XW}}{\underset{hypotenuse}{XZ}}\implies XZ\cdot cos(21^o)=XW \\\\\\ \cfrac{1.9\cdot sin(70^o)\cdot cos(21^o)}{sin(89^o)}=XW\implies 1.7\approx XW$