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2 years ago

Find the value of x.

Mathematics

2 answers:

Elis [28]2 years ago

8 0

Answer:

C (86.113)

Step-by-step explanation:

First, find the missing angle B. Since angles in a triangle add upp to 180,

180-26-90= 64

Then use the formula a/sina = b/sinb

' a' in the formula is the missing length X and sina is the corresponding(opposite) angle of X which is sin64.

B in the formula would be 42 and sinb is sin26 (the angle).

Substitute all values into the formula,

X/sin64 = 42/ sin26

Shift sin64 to the right side:

X= 42(sin64)/ sin26

X= 86.113

Hope this makes sense:)

masya89 [10]2 years ago

3 0

Step-by-step explanation:

$\tan(26) = \frac{42}{x} \\0.487732588565 \times x = 42 \\ x = 86.11276134633$

C.x=86.113

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