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3 years ago

If sin x = 5/13 and x is in quadrant 1, than tan x/2 = ___ Please give an explanation!

Mathematics

1 answer:

Phoenix [80]3 years ago

7 0

Answer:

if sin x = 5/13 and x is in quadrant 1,than tan x/2= -5

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C. Divide 45 into three parts which are in A.P. Such that the pr oduct of last two is 300.

skelet666 [1.2K]

(a−b)+a+(a+b)=45

⟹3a=45

a=15

a(a+b)=300

⟹15(15+b)=300

⟹225+15b=300

⟹15b=300−225

⟹15b15=7515

b=5

a−b=10⟹a=15⟹a+b=20

The three numbers are 10, 15, and 20.

Proof:

10+15+20=45✓

4 0

2 years ago

Joy recorded the distances she walked each day for five days. How far did she walk in 5 days?

laila [671]

Answer: She walk $2\frac{1}{6}\ miles$ in 5 days.

Step-by-step explanation:

Since we have given that from the graph:

Distance of $\frac{1}{3}$ for 3 days.

Distance of $\frac{1}{2}$ for 1 day.

Distance of $\frac{2}{3}$ for 1 day.

So, Total distance she covered by walk in 5 days is given by

$\frac{1}{3}\times 3+\frac{1}{2}+\frac{2}{3}\\\\=1+\frac{1}{2}+\frac{2}{3}\\\\=\frac{6+3+4}{6}\\\\=\frac{13}{6}\\\\=2\frac{1}{6}\ miles$

Hence, She walk $2\frac{1}{6}\ miles$ in 5 days.

4 0

3 years ago

Anni [7]

i think the question is not correct write it again or attach the pic ic

6 0

3 years ago

What is the GCF for 70 and 90

Anna [14]

The GCF for 70 and 90 is 10.

7 0

3 years ago

Read 2 more answers

Calculate the length of AB. Round to the nearest tenth.

marissa [1.9K]

Answer:

AB = 10.06 cm

Step-by-step explanation:

Consider the given figure,

We have to find the length of side AB.

Lets rename the figure first, ABCD forms a rectangle. So , CB = DA = 12 cm

Also, EA = ED +DA ⇒ 15 = ED + 12 ⇒ ED = 15 - 12 ⇒ ED = 3 cm

Pythagoras theorem states that in a right triangle the sum of square of base and perpendicular is equal to square of hypotenuse.

Using, Pythagoras Theorem on Δ EDC,

$(EC)^2=(ED)^2+(DC)^2$

ED = 3 cm , EC = 10.5, Substitute, we get,

$\Rightarrow (10.5)^2=(3)^2+(DC)^2$

Solve for DC, we get,

$\Rightarrow 110.25=9+(DC)^2$

$\Rightarrow 110.25-9=(DC)^2$

$\Rightarrow (DC)^2=101.25$

$\Rightarrow DC=\sqrt{101.25}$

$\Rightarrow DC=10.06$

Since, ABCD is a rectangle. Thus, DC = AB

Hence, AB = 10.06 cm

7 0

3 years ago

Read 2 more answers