California Pre-Algebra, 2008
30

 PAGE: 493 SET: Exercises PROBLEM: 30

From the diagram, the tangent value is

(Substitute y for opposite side, 10 for adjacent side)

(Use a calculator to find tangent value)

(Multiply by 10 to each side)

(Cancel common terms)

(Multiply: )

(Rounded to nearest integer)

From the diagram, the tangent value is

(Substitute 5 for opposite side, z for adjacent side)

(Use a calculator to find tangent value)

(Multiply each side by z)

(Cancel common terms)

(Divide each side  by 0.7002)

(Cancel common terms)

(Divide: )

(Rounded to nearest integer)

.

The value of x is 17.

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