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ohaa [14]
3 years ago
14

How do you simplify this?

Mathematics
1 answer:
levacccp [35]3 years ago
4 0

Answer:

tan x

Step-by-step explanation:

(tan-x)[sec(pi/2)-x] (sin-x)

We know that tan (-x) = - tan (x)  and sin (-x) = - sin (x)

-(tanx)[sec(pi/2)-x] -(sinx)

(tanx)[sec(pi/2)-x] (sinx)

Using the identity sec = 1/ cos

sec ( pi/2 -x) =1/cos ( pi /2 -x)

We know that cos (s-t)=cos (s) cos(t) + sin (s) sin (t)

1/ ( cos  pi/2  cos x + sin pi/2 sin x) = 1/(0 cos x - 1 sinx) = 1 / sinx

Replacing into the equation

(tanx)[1/ sinx] (sinx)

tan x

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Evaluate the expression a + c for a = 22 and c = 11.
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Answer: 33

Step-by-step explanation: substitute a with 22 and c with 11.

22+11=33

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Write an algebraic expression that Marshall can use to determine the total cost of buying a watermelon that weighs w pounds and
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Answer:

The answer is that the cost will be a total of: $142.05. That is $125.80 for Watermelon that weighs 185 lbs and $16.25 for 5 lbs of tomatoes.

Step-by-step explanation:

Given: Watermelons are .68 / lb and tomatoes are 3.25 / lb.

Let w = watermelon weight and tomato weight.

An equation would be:

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A shop has 55 posters for sale. 34 posters show sports. The rest of the posters show animals. How many posters show animals?
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That angle looks like a reflex angle

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Uma pesquisa entrevistou 1000 indivíduos, 600 rejeitam o partido A, 500 rejeitam o partido B e 200 não rejeitam nenhum partido.
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Answer:

300 people rejected part A and part B.

Step-by-step explanation:

First let's review the information given by the statement of the exercise.

1000 people surveyed.

600 reject part A, 500 part B and 200 reject no one. Therefore, of those 1000, 800 reject a party, either A or B, since 1000 respondents - 200 who do not reject = 800 who reject.

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