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/ 1-derive-the-trig-identities-cos-2x-cos2-x-sin2-x-and-sin-2x-2cos-x-sin-x-without-using-tri-pa982
(Solved): 1. Derive the trig identities cos(2x)=cos2(x)sin2(x) and sin(2x)=2cos(x)sin(x) without using tri ...
1. Derive the trig identities
cos
(
2
x
)
=
cos
2
(
x
)
?
sin
2
(
x
)
and
sin
(
2
x
)
=
2
cos
(
x
)
sin
(
x
)
without using trig identities (Use Euler's Formula)
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