Solve trig equation
Solve equations involving sin, cos, tan and their inverses. Shows all solutions in one period and the general solution.
Equation
Solving trig equations
Isolate the trig function, then use inverse trig to find the reference angle. Account for all solutions in the period.
sin(x) = 0.5: x = π/6 and x = 5π/6 in [0, 2π). General: x = π/6 + 2nπ or x = 5π/6 + 2nπ.
Key values to know
sin(30°)=½, sin(45°)=√2/2, sin(60°)=√3/2. cos has same values in reverse. tan(45°)=1, tan(60°)=√3.
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