Review:SOH CAH TOA

**S**-

*sine*

**O**- opposite

**H**- hypotenuese

**C**-

*cosine*

**A**- adjacent

**H**- hypotenuese

**T**-

*tangent*

**O**- opposite

**A**- adjacent

Example:

Find CD ( Hint: Fist find W )

tan 60 =W/2

(2)tan 60=W

W=3.5 cm

tan 60 =X/3.5

(3.5)tan 60=X

X=6.1 cm

Therefore CD=6.1 cm

Angle of Elevation

The angle between the line of sight and the horizontal.

Angle of depression

Homework:Exercise 17

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