2 years ago

Please can someone prove this equation

Mathematics

1 answer:

zubka84 [21]2 years ago

6 0

Answer:

see explanation

Step-by-step explanation:

Using the trigonometric identity

sin²x + cos²x = 1

Consider the left side

2cos²A - 1 ← replace 1 by sin²A + cos²A

= 2cos²A - ( sin²A + cos²A)

= 2cos²A - sin²A - cos²A

= cos²A - sin²A = right side ⇒ verified

You might be interested in

6. Five years ago, Ross was N times as old as

Tema [17]

Answer:

14N+5

Step-by-step explanation:

Five years ago; Rose Nx

Amanda x

Now; Rose Nx+5

Amanda x+5=19

x=19-5=14years

Rose(NOW) =14N+5

8 0

1 year ago

HELP FOR 20 pointsss!!!

monitta

Answer:

Option 1. Hope this helps! :).

Sincerely; Victoria

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

A cereal brand is on sale $2 for 32 oz. If Sally spent $8 on the cereal, how many ounces did she purchase?

Lelechka [254]

Answer:

it would be 128 because 8 divded 2 is 4. 4 is the number of cereal boxes now multiply 4 x32 which would be 128

3 0

3 years ago

Read 2 more answers

A roulette wheel has 38 pockets numbered 0,00,and 1 to 36. Of all 38 pockets 18 are red, 18 are black and 2 are green. Each time

Fiesta28 [93]

Answer:

P(R) = (18/38)

P(G) = (2/38)

P(B) = (18/38)

Step-by-step explanation:

Each spin is independent of the others, so the probabilities of the three possible outcomes (R,G,B) for each spin are:

P(R) = (18/38)

P(G) = (2/38)

P(B) = (18/38)

4 0

3 years ago

Express 150 as a product of PRIME FACTORS.<br>Answer:

Flauer [41]

Answer:

Step-by-step explanation:

$150=2X3X5X5\\ \\ 150=2(3)5^2$

6 0

2 years ago