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Cloud [144]
3 years ago
11

Please someone helppp

Mathematics
1 answer:
joja [24]3 years ago
7 0

Step-by-step explanation:

5)

sin2a=2sina.cosa

Subtitute values in formula:

sin2a=2(3/8)(5/8)

sin2a=30/64

6)

cos2∅=2cos²∅-1

=2(5/3)²-1

=2(25/9)-1

=50/9-1

=50-9/9

=41/9

<h3><u>N</u><u>o</u><u>t</u><u>e</u><u>:</u><u>i</u><u>f</u><u> </u><u>y</u><u>o</u><u>u</u><u> </u><u>n</u><u>e</u><u>e</u><u>d</u><u> </u><u>to</u><u> </u><u>a</u><u>s</u><u>k</u><u> </u><u>a</u><u>n</u><u>y</u><u> </u><u>question</u><u> </u><u>please</u><u> </u><u>let</u><u> </u><u>me</u><u> </u><u>know</u><u>.</u></h3>
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