3 years ago

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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