Khan Academy Static

See Sal solve a bunch of very challenging geometry and algebra problems that involve trigonometry.

4450_Trig_challenge_problem_system_of_equations.html

4447_Trig_challenge_problem_arithmetic_progression.html

4445_Trig_challenge_problem_area_of_a_hexagon.html

4449_Trig_challenge_problem_multiple_constraints.html

4446_Trig_challenge_problem_cosine_of_angle_sum.html

4444_Trig_challenge_problem_area_of_a_triangle.html

4448_Trig_challenge_problem_maximum_value.html

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