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ad-work [718]
4 years ago
6

Cos x if sin x cot x =5

Mathematics
1 answer:
Brrunno [24]4 years ago
8 0

Answer:

cos x = 5

Step-by-step explanation:

=  > sinx.cotx = 5 \\  \\  =  >  \cancel{sinx}. \frac{cosx}{ \cancel{sinx}}  = 5 \\  \\  =  > cosx = 5

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3 years ago
Find the slope of the line passing through the points (-2,9) (8,9)
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Answer:

0

Step-by-step explanation:

(y2-y1)/(x2-x1)

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5 0
3 years ago
Find the 4th term of the expansion<br><br> A<br> B<br> C<br> D
Marysya12 [62]

Answer:

option-A

Step-by-step explanation:

We can use rth term binomial expansion formula

(x+y)^n

T_r=(n,r-1)x^{n-(r-1)}y^{r-1}

we are given

(a-\sqrt{2})^8

we can compare

x=a,y=-\sqrt{2}

n=8

r=4

now, we can find 4th term

T_r=(8,4-1)a^{8-(4-1)}(-\sqrt{2})^{4-1}

now, we can simplify it

T_4=\frac{8!}{5!3!}\times -2\sqrt{2}a^5

T_4=56\times -2\sqrt{2}a^5

T_4=-112\sqrt{2}a^5


5 0
4 years ago
Read 2 more answers
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