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2 years ago

Please help me with this!!!!

Mathematics

2 answers:

irinina [24]2 years ago

8 0

Answer: A.

Step-by-step explanation: this is the answer because, look for keywords, in the sentence thay used the word WITHDREW which is also known as taking away, EX: withdrew= take away, divide, minus

Hope this helps!

PtichkaEL [24]2 years ago

7 0

Answer is a! Hope you have a great day!

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Show that √(1-cos A/1+cos A) =cosec A - cot A

Gennadij [26K]

Hi there!

$\sqrt{\frac{1-cosA}{1+cosA}} =$

We can begin by multiplying by its conjugate:

$\sqrt{\frac{1-cosA}{1+cosA}} * \sqrt{\frac{1+cosA}{1+cosA}} = \\\\\sqrt{\frac{(1-cosA)(1 + cosA)}{(1+cosA)(1 + cosA)}} =$

Simplify using the identity:

$1 - cos^2A = sin^2A$

$\sqrt{\frac{(1-cos^2A)}{(1+cosA)^2}} =\\\\\sqrt{\frac{(sin^2A)}{(1+cosA)^2}} =$

Take the square root of the expression:

${\frac{sinA}{1+cosA} =$

Multiply again by the conjugate to get a SINGLE term in the denominator:

${\frac{sinA}{1+cosA} * {\frac{1-cosA}{1-cosA} =\\$

Simplify:

${\frac{sinA(1-cosA)}{1-cos^2A} =$

Use the above trig identity one more:

${\frac{sinA(1-cosA)}{sin^2A} =$

Cancel out sinA:

${\frac{(1-cosA)}{sinA} =$

Split the fraction into two:

${\frac{1}{sinA} - \frac{cosA}{sinA} =$

Recall:

$1/sinA = cscA\\\\cosA/sinA = cotA$

Simplify:

$\frac{1}{sinA} + \frac{cosA}{sinA} = \boxed{cscA - cotA}$

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2 years ago

How do you solve +5=-5a+5

Bogdan [553]

You subtract the number (5) on the other side of the = sign from the number on the side of the = sign. and divide (-5a) by the number you subtracted before. So untimely- 5-5= 0 ÷ -5a = 0

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3 years ago

A recipe for 16 banana dash nut muffins calls for 1 cup of flour. The number of muffins that can be made varies directly with th

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Answer: 32 muffins can be made

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3 years ago

Read 2 more answers

How many solutions does this<br> graph have?

OlgaM077 [116]

Answer:10

Step-by-step explanation: