p111_lecture3

# P111_lecture3 - Chapter 1 Introduction and Mathematical Concepts Trigonometry and Vectors 1.4 Trigonometry 1.4 Trigonometry ho sin = h ha cos = h

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Introduction and Mathematical Concepts Chapter 1 Trigonometry and Vectors

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1.4 Trigonometry
1.4 Trigonometry h h o = ! sin h h a = cos a o h h = tan

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1.4 Trigonometry m 2 . 67 50 tan o h = o ( ) m 0 . 80 m 2 . 67 50 tan = = o o h a o h h = ! tan Find the height of a building which casts a shadow of 67.2 m when the angle of the Sun’s rays with respect to the ground is 50.0 o .
1.4 Trigonometry ! " # \$ % = ' h h o 1 sin ( ! " # \$ % = ' h h a 1 cos ! ! " # \$ \$ % = ' a o h h 1 tan

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1.4 Trigonometry ! ! " # \$ \$ % = ' a o h h 1 tan ( o 13 . 9 m 0 . 14 m 25 . 2 tan 1 = ! " # \$ % = ' At what angle does the lakefront drop off if the depth of the lake at a distance of 14.0 m is 2.25 m?
1.4 Trigonometry 2 2 2 a o h h h + = Pythagorean theorem:

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1.5 Scalars and Vectors A scalar quantity is one that can be described by a single number: temperature, speed, mass A vector quantity deals inherently with both magnitude and direction: velocity, force, displacement
1.5 Scalars and Vectors By convention, the length of a vector

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## This note was uploaded on 06/03/2011 for the course PHY 111 taught by Professor Bolland during the Fall '10 term at Ohio State.

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P111_lecture3 - Chapter 1 Introduction and Mathematical Concepts Trigonometry and Vectors 1.4 Trigonometry 1.4 Trigonometry ho sin = h ha cos = h

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