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stealth61 [152]
3 years ago
11

Find m •23 •43 •65 •67

Mathematics
2 answers:
mina [271]3 years ago
4 0
Cos x = adjacent/hypotenuse
Cos x = 5/13
MM
nika2105 [10]3 years ago
4 0
Cos F=adjacent/hypotenuse
cos F=5/13
F=arccos(0.3846)
F=~67 degrees
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Step-by-step explanation:

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for cos2x;

cos2x = 1-2sin²x

cos2x = 1-2(1/4)²

cos2x = 1-2(1/16)

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for tan2x;

tan2x  = tanx + tanx/1-tan²x

tan2x = 2tanx/1-tan²x

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rationalize

tan2x =  -30/7√15 * √15/√15

tan2x =  -30√15/7*15

tan2x =  -2√15/7

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