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Tamiku [17]
3 years ago
10

How to gain followers on sm

Mathematics
1 answer:
Mrrafil [7]3 years ago
6 0

Answer: F4f accounts

Step-by-step explanation:

Search up F4f and there are gonna be a bunch of acc. Just follow them and they will follow you back

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I need help pleases I am so confused
Greeley [361]
Bruh what THERES nothing to help no pic or anything luv
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3 years ago
Find the exact value of cos(a+b) if cos a=-1/3 and cos b=-1/4 if the terminal side if a lies in quadrant 3 and the terminal side
maria [59]

Answer:

cos(a + b) = \frac{1}{12}(1-2\sqrt{30})

Step-by-step explanation:

cos(a + b) = cos(a).cos(b) - sin(a).sin(b) [Identity]

cos(a) = -\frac{1}{3}

cos(b) = -\frac{1}{4}

Since, terminal side of angle 'a' lies in quadrant 3, sine of angle 'a' will be negative.

sin(a) = -\sqrt{1-(-\frac{1}{3})^2} [Since, sin(a) = \sqrt{(1-\text{cos}^2a)}]

         = -\sqrt{\frac{8}{9}}

         = -\frac{2\sqrt{2}}{3}

Similarly, terminal side of angle 'b' lies in quadrant 2, sine of angle 'b' will be  negative.

sin(b) = -\sqrt{1-(-\frac{1}{4})^2}

         = -\sqrt{\frac{15}{16}}

         = -\frac{\sqrt{15}}{4}

By substituting these values in the identity,

cos(a + b) = (-\frac{1}{3})(-\frac{1}{4})-(-\frac{2\sqrt{2}}{3})(-\frac{\sqrt{15}}{4})

                = \frac{1}{12}-\frac{\sqrt{120}}{12}

                = \frac{1}{12}(1-\sqrt{120})

                = \frac{1}{12}(1-2\sqrt{30})

Therefore, cos(a + b) = \frac{1}{12}(1-2\sqrt{30})

5 0
3 years ago
Can someone help me with a math test​
Inessa05 [86]

Answer:

sure

Step-by-step explanation:

whats it based on?

3 0
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Dafna1 [17]

Item A and B are in decimal format, convert Item C to decimal by changing the fraction to a decimal by dividing 11 by 16:


11 / 16 = 0.6875

This makes Item C 3.6875


Now you have the 3 items as decimal format now put them in order from smallest to largest:

3.65, 3.6875, 4.1


Item A, Item C, Item B

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(6p+4)+(-5p+8)<br> Plz i need help
dmitriy555 [2]
The solution is p + 12.
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