Elba R.
asked • 03/22/20Simplify the expression. Use sum and difference identities.
Sin4theta•costheta + cos4theta•sintheta
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2 Answers By Expert Tutors
Tracy D. answered • 03/22/20
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Upbeat, patient Math Tutor investing in students to succeed
Sin (α + β) = SinαCosβ + CosαSinβ
So the above simplified is Sin(4Φ + Φ) = Sin 5Φ
Yefim S. answered • 03/22/20
Tutor
5
(20)
Math Tutor with Experience
sin4ξ·cosξ + cos4ξ·sinξ = sin(4ξ + ξ) = sin5ξ
Answer: sin5ξ
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Mark M.
Is the 4 an exponent or a factor?03/22/20