3 years ago

Sin4u=2sin 2u cos 2u

Mathematics

1 answer:

yKpoI14uk [10]3 years ago

4 0

Answer:

If you've learnt sin(A+B) = sinAcosB + cosAsinB,

sin(4u)

= sin(2u+2u)

= sin(2u)cos(2u) + cos(2u)sin(2u)

= 2 sin(2u) cos(2u).

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Sin4u=2sin 2u cos 2u​

Sin4u=2sin 2u cos 2u