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9.2.6  Simplifying trigonometric expressions

The trigsimplify command simplifies trigonometric expressions by combining simplify (see Section 9.1.3), texpand (see Section 9.4.1), tlin (see Section 9.2.2), tcollect (see Section 9.2.4), trigsin (see Section 9.2.23), trigcos (see Section 9.2.24) and trigtan (see Section 9.2.25) commands in a certain order.

Examples

trigsimplify((sin(x+y)-sin(x-y))/(cos(x+y)+cos(x-y)))
     
tany           
trigsimplify(1-1/4*sin(2a)^2-sin(b)^2-cos(a)^4)
     
sin2asin2b           

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