All categories

3 years ago

Please help ill give brainliest

Mathematics

1 answer:

Paul [167]3 years ago

3 0

1.c
2.d
3.b
4.a
Im sure about 1 and 4 but a little hesitant on 2 and 3 but good luck pretty sure it’s right

You might be interested in

I need help on this it’s about trig identities

Cerrena [4.2K]

Answer:

The answer to your question is:

Step-by-step explanation:

1.-

$\frac{1 + sin\alpha }{cos\alpha } + \frac{cos\alpha }{1 + sin\alpha } = 2 sec\alpha$

$\frac{(1 + sin\alpha)^{2} + cos^{2} \alpha }{cos\alpha (1 + sin\alpha) }$

$\frac{1 + 2sin\alpha + sin^{2} \alpha+ cos^{2} \alpha }{cos\alpha + sin\alphacos\alpha }$

$\frac{2 + 2sin\alpha }{cos\alpha+ sin\alpha cos\alpha }$

$\frac{2(1 + sin\alpha) }{cos\alpha(1 + sin\alpha ) }$

$\frac{2}{cos\alpha }$

2sec $\alpha$

2.-

sec²x - tanxsecx

$\frac{1}{cos^{2}x } - \frac{sinx}{cosx} \frac{1}{cosx}$

$\frac{1}{cos^{2} x} - \frac{sinx}{cos^{2}x}$

$\frac{1 - sinx}{cos^{2}x }$

$\frac{1 - sinx}{1 - sin^{2}x }$

$\frac{1 - sinx}{(1 - sinx)(1 + sinx)}$

$\frac{1}{1 + sinx}$

3 0

2 years ago

Due to random variations in the operation of an automatic coffee machine, not every cup is filled with the same amount of coffe

DaniilM [7]

Answer:

465

because it is the wright answer

5 0

2 years ago

Please help me out here

Sophie [7]

Answer:

your answer is C) A negative radius does not make sense.

Step-by-step explanation:

hope it helps ^_^

5 0

2 years ago

20 - k/15 = 17 What is k?

tester [92]

20 - k/15 = 17
20 - 17 = k/15
3 = k/15
k = 45

6 0

2 years ago

Read 2 more answers

A women invest 806.68in a saving account that pays 5.25% annually how much is in the account at the end of the year

Brut [27]

Simple interest= prt
=806.68 (.0525)(1)
=42.35

Balance=investment + interest earned
806.68+42.35=$849.03

3 0

3 years ago

Please help ill give brainliest​

Please help ill give brainliest