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Kamila [148]
3 years ago
10

Write cos^4x as an equivalent expression that does not contain powers of trigonomretric functions greater than 1

Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
4 0
cos^{4}x [/tex] = cos^{2}x.cos{2}x = (cos2x+1)(cos2x+1)/4

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Veseljchak [2.6K]
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Min-jun travels 27 miles per hour. How long does it take him to travel 21 miles. Nearest tenth
Advocard [28]

Answer:

0.8 hours

Step-by-step explanation:

From the question;

  • Speed of Min-jun is 27 miles per hour
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We need to determine the time he takes to cover the distance given;

We need to know that;

Speed = Distance ÷ time

Rearranging the formula;

time = Distance ÷ speed

Thus;

Time = 21 miles ÷ 27 miles per hour

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Aleksandr-060686 [28]

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3 years ago
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Use the pythagorean theorem 1) a=7 b=12
steposvetlana [31]

Answer:

√193

Step-by-step explanation:

7^2 = 49

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144 + 49= 193

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Answer:

B. Add 2/5 to both sides

Step-by-step explanation:

Yuu have to add because it says subtract. inverse operations

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