3 years ago

Cos 2x + 2 sin^2 x = _______

Mathematics

1 answer:

Tems11 [23]3 years ago

3 0

Step-by-step explanation:

cos 2x + 2 sin²x

= (1 - 2 sin²x) + 2 sin²x

= 1 - 2 sin²x + 2 sin²x

= 1

You might be interested in

Can someone please answer this

ale4655 [162]

Answer: 3 3 1/2 1

1/2 2 1/2 4 1/2

4 1 1/2 2

3 0

3 years ago

A cyclist travels from Ato B in two stages. Stage one is 28kmwhich is 2/7 of the total journey . How long is stage 2

Sladkaya [172]

Stage B would be 70km since 5/7 is stage B and 5 x 14 = 70

6 0

3 years ago

One month, the price of gas was $1.44. The next month the price of gas was $2.40. What was the approximate percent of increase f

Lapatulllka [165]

Step 1:
Find the difference between the two numbers.
$2.40-$1.44= $0.96

Step 2:
Divide by the original number.
$0.96/1.44= 0.667

Step 3:
Multiply by 100 to find percent increase.
0.667 * 100= 66.7% rounded to one decimal place or 67% rounded

Hope this helped! :)

6 0

4 years ago

How to find the surface area of a hexagon?

shutvik [7]

Answer:

adding all the areas on the surface: the areas of the base, top, and lateral surfaces (sides) of the object.

Step-by-step explanation:

6 0

2 years ago

A sum of money was to be shared among three friends,Albert,Micheal,Moses in the ratio 3:5:6.if Micheal receives $45,find the sum

kirza4 [7]

Answer:

The sum of the money shared is $1372

Step-by-step explanation:

The given ratio is

Albert:Michael:Moses=3:5:6

The total ratio is 3+5+6=14

Let the sum of money shared be $x.

Then Albert's share = 3/14 x $x$ = 3 $x$ / 14

Michal's Share = 5x/14

If Michael received $196 more than Albert, then the difference between their share is the $196.

7 0

3 years ago