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Ito | Mathematics
IGCSE
IB Math AA SL
IB Math AA HL
Challenges
Trigonometric Equations and Identities
Trigonometric Equations
worksheet and textbook only
Reciprocal Trigonometric Functions
worksheet and textbook only
Inverse Trigonometric Functions
worksheet and textbook only
Algebra with Trigonometric Expressions
Double Angle Identities
Compound Angle Identities
Find the range of the function $y=\sin^4 x + \cos^2 x$