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xeze [42]
3 years ago
10

Product tan1°.tan2°.tan3º......tan89° is:

Mathematics
1 answer:
Gelneren [198K]3 years ago
4 0

\sin(x) = \cos(90-x)  \frac{sin(x)}{cos(90-x)} = 1\\\prod_{n=1}^{89}\tan(n) = \frac{\sin(1)}{\cos(1)} \cdot \frac{sin(2)}{cos(2)}...\frac{sin(89)}{cos(89)} = 1

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Solve this equation: y-3x+15=10
Jlenok [28]

Answer:

10=10

Step-by-step explanation:

y-3x+15=10

y=3x-15+10

y=3x-5

subtitute y=3x-5 in the above equation:

3x-5-3x+15=10 (3x will be eliminated with -3x)

-5+15=10

10=10

(i hope this is the way you want the answer but at least I think it is correct)

3 0
3 years ago
A box of 6 eggs costs £1.80. Work out how much a<br> box of 10 eggs would cost.
telo118 [61]

Answer:

18

Step-by-step explanation:

1.80 x 10 = 18.0

:)

5 0
3 years ago
True or false. to solve y in the equation 2x y=5, subtract 2 from both sides of the equation
gladu [14]
True. To solve for y you have to subtract 2 from both sides of the equation.
3 0
3 years ago
Help FAST PLZ!!! marking brainliest!
ss7ja [257]

Answer:

After finding the prime factorization of $2010=2\cdot3\cdot5\cdot67$, divide $5300$ by $67$ and add $5300$ divided by $67^2$ in order to find the total number of multiples of $67$ between $2$ and $5300$. $\lfloor\frac{5300}{67}\rfloor+\lfloor\frac{5300}{67^2}\rfloor=80$ Since $71$,$73$, and $79$ are prime numbers greater than $67$ and less than or equal to $80$, subtract $3$ from $80$ to get the answer $80-3=\boxed{77}\Rightarrow\boxed{D}$.

Step-by-step explanation:

hope this helps

5 0
2 years ago
The drama club is printing T-shirts for its members. The printing company charges a certain amount for each shirt plus set up fe
Natalka [10]

Answer: $7

Step-by-step explanation:

Let x = Cost of each T-shirt.

As per given,

Total charge  =( Number of t shirts x Cost per t shirt )+ set up fee  

For 21 T-shirts , total charge would be : 21x+40  

According to the question

⇒21x+40=187

⇒21x = 187-40

⇒21x = 147

⇒x= 7

Hence, each T-shirt costs $7 .

3 0
3 years ago
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