The value of cos 4x from the given identity is 0.999
<h3>Trigonometry identity</h3>
Given the cosine identity
cos8x = 13/36
Determine the value of x
8x = arccos(13/36)
8x = 0.36111
x = 0.36111/8
x = 0.04514
Determine the value of cos4x
cos4x = cos4(0.04514)
cos4(0.04514) = 0.999
Hence the value of cos 4x from the given identity is 0.999
Learn more trig identity here; brainly.com/question/7331447
Answer:
$15.57
Step-by-step explanation:
2.07 times 7.50 = $15.57!
Step-by-step explanation:
A. -12
B. -8
C. 8
D. 12
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Answer:
The given expressions simplifies to tan (4x).
Step-by-step explanation:
Here, the given expression is : 
By TRIGONOMETRIC IDENTITY:
Putting this identity here, and taking A = 9 x, B = 5 x, we get
= tan(4x)
Hence, the given expressions simplifies to tan (4x).
Answer:
113.04 cm²
Step-by-step explanation:
area of a circle= πr²
= 3.14 x 6²
=3.14 x 36
= 113.04 cm²
