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4 years ago

8

I don’t understand this question. Can someone please help me?

1 answer:

ICE Princess25 [194]4 years ago

6 0

Answer:

idk

Step-by-step explanation:

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Find sin3A, cos<br> 3A and tan 3A when sin=1/2<br>

Slav-nsk [51]

Answer:

Sin 3A = 1

cos 3A = 0

tan 3 A = undefined

Step-by-step explanation:

$\sin A = \frac{1}{2} \\ \therefore \: \sin A = \sin \: 30 \degree.. \bigg( \because \: \sin \: 30 \degree = \frac{1}{2} \bigg) \\ \therefore \: A = 30 \degree \\ \\ now \\ \sin 3A =\sin (3 \times 30 \degree)= \sin \: 90 \degree = 1 \\ \\ \cos 3A =\cos (3 \times 30 \degree)= \cos \: 90 \degree = 0\\\\ \tan 3A =\tan (3 \times 30 \degree)= \tan \: 90 \degree = \infty$

4 0

4 years ago

2-2=____<br> I did this just so you can get points.

Rudik [331]

2-2=0
Lol, thanks! I appreciate it.

3 0

3 years ago

Read 2 more answers

Which picture shows the correct graph of [x = 3? A 0 B -5 -2 C -6 3 -2 -1 0 1 4 D = -2 -1 E 4 -2 -1 A F 4 + NO

Kay [80]

Answer:

is there suppost to be a picture if so its not there

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Lee likes to water ski on his brother's boat and plans to ski for two days in a row. The boat takes two gallons of gas each hour

riadik2000 [5.3K]

Answer:

120 dollars

Step-by-step explanation:

6 hours per day, for 2 days, leads to a total of 12 hours (2*6 = 12)

If it takes 2 gallons of gas to run the boat for 1 hour, then it will take 24 gallons to run for 12 hours. We can see this if we have the ratio below

2 gallons: 1 hour

12*(2 gallons): 12*(1 hour) .... multiply both sides by 12

24 gallons: 12 hours

Now multiply this gallon count (24) by the cost per gallon ($5) and we get to 5*24 = 120

3 0

3 years ago

Make sure your answer is in

romanna [79]

Answer:

210° , 330°

Step-by-step explanation:

using the sides of the 30- 60- 90 triangle

with legs 1, $\sqrt{3}$ and hypotenuse 2 , then

$sin^{-1}$ $\frac{1}{2}$ = 30° ← related acute angle

since $sin^{-1}$ - $\frac{1}{2}$

then angle is in third / fourth quadrants , then required angles are

180° + 30° = 210° ← in third quadrant

360° - 30° = 330° ← in fourth quadrant

6 0

2 years ago