Topic explanation

Standard explanation

Treat the whole shifted angle as one variable, solve, then subtract the shift.

Key points

• Equations with shifted angles
• rule
• worked example
• Equations with shifted angles: Treat the whole shifted angle as one variable, solve, then subtract the shift.
• CONCEPT AND RULE: Treat the whole shifted angle as one variable, solve, then subtract the shift.
• METHOD: For equations with shifted angles, identify the given information and required result. Select the ma
• Treat the whole shifted angle as one variable, solve, then subtract the shift.
• Worked pattern: cos(x-pi/3)=1 gives x=pi/3+2npi.

Labelled diagram