Trigonometry Of A RAT Flashcards
How do we remember the three trig functions?
SOHCAHTOA
Sin(theta)=O/H
Cos(theta)=A/H
Tan(theta)=O/A
What do we apply the sine, cosine and tanjent functions to?
We apply the sine, cosine and tanjent functions to an angle.
Where is the hypoteneuse located in a right-angled triangle?
The hypoteneuse is located opposite the right angle in a right-angled triangle.
Where is the opposite located in a right-angled triangle?
The opposite is located opposite the angle theta in a right-angled triangle.
Where is the adjacent located in a right-angled triangle?
The adjacent is located on the side with both the right angle and theta on it in a right-angled triangle.
If you are given two sides in a right-angled triangle, how would you find the angle?
If you are given two sides you can find a missing angle using the inverse trig functions. (Sin-1, cos-1, tan-1). Practice these.
What is the angle of elevation?
The angle of elevation describes the angle you would have to look up to in order to see an object.
What is the angle of depression?
The angle of depression is the angle you would have to look down through.
What must you do when doing a three figure bearing question?
When you do a three figure bearing question you must draw a diagram.
How is a bearing measured?
A bearing is measured
1) from the north line
2) in a clockwise direction
A bearing is written as 3 figures.
