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Polar Intersections. 5025D. I. Trig Identities. II. Solving Trig Equations. Review: Solving Trig Equations. 1. Never divide!!!!!. Double twice the angles Triple three times the angles Half half as many angles.
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Polar Intersections 5025D
Double twice the angles Triple three times the angles Half half as many angles
*Note: better to ask where are sin and cos equal. We know cosθ≠0 when cos θ=sinθ
Check the Pole: set r=0 yes or no If both yes the Pole is an intersection point and find θ Set the equation EQUAL to each other and solve for θ. (to find secondary places of equality Compare your answers against the graphs Method
Pole: EXAMPLES:
Pole: yes yes
yes Pole: yes