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blagie [28]
3 years ago
13

Sin ( 90 + theta ) = cos theta prove^

Mathematics
1 answer:
liberstina [14]3 years ago
5 0
We will use additional formula:
sin ( 90°+ theta ) = sin 90° * cos(theta) + cos 90° * sin(theta)=
= 1 * cos(theta) + 0 * sin(theta)= cos (theta)           It is proved.
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I need help with this one asap please and thank you
inna [77]

Answer:

C

Step-by-step explanation:

A

(m² - 3m + 2) / (m² - m)

we see due to a little bit of experience with expressions and multiplications of expressions that

(m² - 3m + 2) = (m - 2)(m - 1)

(m² - m) = m(m - 1)

so,

(m - 2)(m - 1) / (m(m - 1)) = (m - 2) / m

so, that's not it.

B

(m² - 2m + 1) / (m - 1)

we see again

(m² - 2m + 1) = (m - 1)(m - 1)

so,

(m - 1)(m - 1) / (m - 1) = m - 1

so, that's not it.

C

(m² - m - 2) / (m² - 1)

we see again

(m² - m - 2) = (m - 2)(m + 1)

and

(m² - 1) = (m + 1)(m - 1)

so,

(m - 2)(m + 1) / ((m + 1)(m - 1)) = (m - 2) / (m - 1)

yes, that is the solution.

D

(2m² - 4m) / (2(m - 2))

2m(m - 2) / (2(m - 2)) = 2m/2 = m

no, that is not a solution.

8 0
1 year ago
What is 9 3/4 as a percent?
masya89 [10]

Answer:

9 3/4 = 975%

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Multiply.
Anvisha [2.4K]

Answer:

2x*x

2x*-5

1*x

1*-5

2x²-10x+x-10 add numbers that have similar variables

-2x²-10x+x-10

=[-2x²-9x-10]

8 0
2 years ago
Cuanto es la respuesta de -126=14k?
N76 [4]

Answer:

\boxed{ \bold{ \huge{ \boxed{ \text{k =   - 9}}}}}

Step-by-step explanation:

\star{ \text{ - 126 = 14k}}

\text{step \: 1 \: : Intercambia los lados de la ecuación}

\hookrightarrow{ \sf{14k =  - 126}}

\text{step \: 2 : Divide ambos lados por 14}

\hookrightarrow{ \sf{ \frac{14k}{14}  =  \frac{ - 126}{14}}}

\text{step \: 3 \:  : Calcular}

\hookrightarrow{ \sf{k =  - 9}}

\text{el valor de k es  - 9}

------------------------------------------------------------

Translation in English:

Step 1 : Swap the sides of the equation

Step 2 : Divide both sides by 14

Step 3 : Calculate

\sf{Hope \: i \: helped ! }

\sf{Best \: regards !!}

~\sf{TheAnimeGirl}

6 0
3 years ago
Read 2 more answers
Car rentals involve a $130 flat fee and an additional cost of $31.67 a day what is the maximum number of days you can rent a car
Dmitry_Shevchenko [17]
The equation is $130 + $31.67x = 500
Subtract 130 from both sides $31.67x = $370
Divide $31.67 from both sides
X=11.68
BUT
you can’t have .68 of a day so the answer is 11 days.
8 0
3 years ago
Read 2 more answers
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