All categories

2 years ago

Find the value of ( 1+cosA) (1-cosA)

Mathematics

1 answer:

Mandarinka [93]2 years ago

3 0

Answer:

sin^2 A

Step-by-step explanation:

first expand the trigonometry

1(1-cosA)+cosA(1-cosA)

=1-cosA+cosA-cos^2 A

= 1-cos^2 A

from trigonometric identity sin^2 A + cos^2 A= 1

sin^2 A= 1- cos^2 A

=sin^2 A

You might be interested in

The graph of a sine function g(x) is presented below.

NISA [10]

Solution

To determine the vertical translation

We need to determine the amplitude

The amplitude is

$\frac{10-4}{2}=\frac{6}{2}=3$

Since the minimum is 4

Hence, the Vertical shift is 3+4 = 7

Part B

Given f(x) = 4 sin(θ - 45) + 8

The vertical translation is 8

3 0

8 months ago

Is 0.9 a rational number ? what type of answer is desired?

wolverine [178]

When paired with 0.23 0.9 is a rational number

6 0

2 years ago

Use the formula C(n, x)pxqn − x to determine the probability of the given event. (Round your answer to four decimal places.) The

miskamm [114]

Answer: 0.1334

Step-by-step explanation:

Given

There are seven trails with a probability of success is $p=\frac{1}{4}$

$\therefore q=1-p\\q=1-\frac{1}{4}\\q=\frac{3}{4}$

Using the binomial distribution, the Probability of exactly no success i.e. x=0 is given by

$\Rightarrow ^7C_0\cdot p^0 \cdot q^{7-0}\\\Rightarrow 1\times(\frac{1}{4})^0 \cdot (\frac{3}{4})^7\\\Rightarrow 1\times 1 \cdot (0.75)^7\\\Rightarrow 0.1334$

7 0

2 years ago

the book fair had a sale where 6 book were $20.46 if you wanted to buy 7 books ,how much money would you need ?

Rina8888 [55]

Answer:

$23.87

Step-by-step explanation:

Start by finding out how much one book costs-

$20.46/6=3.41

Then find out how much seven books cost- 3.41 (7)=$23.87

4 0

2 years ago

Read 2 more answers

Need ko na po this now<br><br>please answer this question<br><br>thank you po

Umnica [9.8K]

Answer:

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers