Determine whether the formula describes y as a function of x. Explain your reasoning. y = -x
1 answer:
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The exact value of sin 15° is .
Solution:
45 – 30 = 15
sin 15° can be written as sin (45° – 30°).
Using trigonometric difference formula:
sin(A – B) = sin A cos B – cos A sin B
sin (45° – 30°) = sin 45° cos 30° – cos 45° sin 30°
The value of sin 45° =
The value of cos 30° =
The value of cos 45° =
The value of sin 30° =
Substitute these values, we get
Hence the exact value of sin 15° is .
Answer:
The maximum error in calculating the surface area of the box is 152 square cm.
Step-by-step explanation:
We are given the following information in the question:
The dimensions of a closed rectangular box are measured as 80 cm, 60 cm, 50 cm, respectively.
Possible error = 0.2 cm
Surface area of rectangular box =
where l, b and h are the length, breadth and height of the rectangular box respectively.
Change in area =
Putting the values, we get,
Change in area =
The maximum error in calculating the surface area of the box is 152 square cm.