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True OR False
1. line of sight is an imaginary line that connects the eye of an observer to the object being observed 2.angle of elevation is an angle from the horizontal to the line of sight of the observer to object above 3.angle of depression is an angle from the horizontal to the line of the sight of the observer to the object below 4. the potion that state in a right triangle the ratio of a leg opposite an acute angle to the length of a hypotenuse is called the sine of an angle 5.the proportion that states in a right triangle the ratio of the leg adjacent an acute angle to the length of the hypotenuse is called the cosine of an angle 6.the proportion that state is a right triangle the ratio of the length of an opposite leg to the length of a adjacent leg of an acute angle is called the tangent of an angle 7.trigonometric ratio can be used to find measure of unknown part of a right triangle when the length of two sides are known and you need to find the measure of an acute angle 8.the measure of a side an acute angle are known and you need to find the length of another side 9.to solve real-life problem involving right triangles requires knowledge of some terms such a line of sight angle of elevation and angle of depression 10.trigonometric ratio may be used to solve problem involving angles of elevation and depression .
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