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Stella [2.4K]
3 years ago
9

PLATO USERS!

Mathematics
2 answers:
Lelechka [254]3 years ago
7 0

Answer:

See below in bold.

Step-by-step explanation:

cos (420) = cos (420 - 360)

= cos 60

= 1/2.

sin 450 = sin(450-360)

= sin 90

=  1.

Maurinko [17]3 years ago
4 0

Answer:

see below

Step-by-step explanation:

cos(420°) =  cos 60 = 1/2

sin(450°) = sin 90 = 1

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