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zysi [14]
3 years ago
7

Find sin18 /cos72please help I am writing exam​

Mathematics
2 answers:
faust18 [17]3 years ago
5 0

Answer:

sin 18 = cos ( 90 - 72 ) = sin 18

so,

sin 18 / cos 72 = sin 18 / sin 18 = 1

Step-by-step explanation:

so required answer is 1

tekilochka [14]3 years ago
3 0

Answer:

sin18/cos72= sin(18) sec(72)

Step-by-step explanation:

rewrite it as a product: sin(18)/1 * 1/cos(72)

Divide sin(18) by 1 and rewrite 1/cos(72) as sec(72): sin (18) sec (72)

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3 years ago
What’s the answer?!!!!!!
Sergio [31]

Answer:

no

Step-by-step explanation:

Using the converse of Pythagoras' identity.

If the square of the longest side is equal to the sum of the squares of the other 2 sides then the triangle is right.

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7 0
3 years ago
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yKpoI14uk [10]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

6 0
3 years ago
3x+30+x=10+2x+5x+2 <br> i need help fast
kupik [55]

Answer:

x=6

Step-by-step explanation:

Group Like Terms:

3x+x+30=10+2x+5x+2

Add similar elements 3x+x=4x:

4x+30=10+2x+5x+2

Add similar elements 2x+5x=7x:

4x+30=10+7x+2

Group like terms:

4x+30=7x+10+2

Add the numbers 10+2=12:

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Subtract 30 from both sides:

4x+30-30=7x+12-30

Simplify:

4x=7x-18

Subtract 7x from both sides:

4x-7x=7x-18-7x

Simplify:

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Divide both sides by -3:

\frac{-3x}{-3} =\frac{-18}{-3}

Simplify:

x=6

Hence, the correct answer is 6

4 0
2 years ago
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