5π/12 = (5 · 180°) : 12 = 75°
cos 75° = cos ( 45° + 30° )= cos 45° cos 30° - sin 45° sin 30° =
=√2/2 * √3/2 - √2/2 * 1/2 =
=(2.4495 - 1.4142): 4 = 0.258825
I need this answer too can someone please help us out with the right answer ?!
Explanation:
Answer:
The smallest number is x = -2
for which this statement holds !!
Step-by-step explanation:
Let as assume the number be x
then the number is one less than twice its reciprocal i.e,
[ For solution refer to the attached file ]
- Method used to solve quadratic equation is Splitting the middle term !!
X - the cost of one night´s lodging
y - the cost of a meal
3 x + 6 y = 132
3 x + 2 y = 109 / * (-1)
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3 x + 6 y = 132
-3 x - 2 y = - 109
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4 y = 23
y = 5.75
3 x + 34.50 = 132
3 x = 97.50
x = 97.50 : 3
x = $32.50
The cost of one night´s lodging is $32.50.
