450 likes | 566 Views
TRIGONOMETRY. METRY. TRIGONOS. THE BASICS. The Coordinate System. Y-AXIS. Quadrant II. Quadrant I. X-AXIS. Quadrant III. Quadrant IV. Radian Measure. Since the circumference of a circle is _______ , one complete rotation would have arc length of _______. Radian Measure.
E N D
METRY TRIGONOS
The Coordinate System Y-AXIS Quadrant II Quadrant I X-AXIS Quadrant III Quadrant IV
Radian Measure Since the circumference of a circle is _______ , one complete rotation would have arc length of _______.
Angle Measurement Positive Angle Negative Angle Counterclockwise rotation. Clockwise rotation.
Trigonometric Functions & the relation between them
Similarly divide by p and b respectively to derive these relations yourself…
Trigonometric Functions of ( ± ) Remember The rest of the steps will be the same as followed previously all we have to take care is in which quadrant the resultant function lies in.
COMPOUND ANGLE FORMULAE Sum and Difference Formulae
If we replace B by (-B) in formula of sin(A – B), we have
ILLUSTRATION TIME
If in a ABC, cos3A + cos3B + cos3C = 3cosA cosB cosC, Prove that the triangle is equilateral.