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Lynna [10]
3 years ago
15

Prove the following relations: 1) (1 - cos²A) (1 + tan²A) = tan²A​

Mathematics
2 answers:
krok68 [10]3 years ago
7 0

Step-by-step explanation:

So, this way we can do. Thank you!

liberstina [14]3 years ago
4 0

Step-by-step explanation:

(1 - cos²A) (1 + tan²A) = tan²A

(sin²A)(sec²A) = tan²A

(sin²A)(1/cos²A) = tan²A

(sin²A)/(cos²A) = tan²A

tan²A = tan²A → <u>Proved</u>

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Mrs. Mobley can jog 3 miles in 27 minutes. How many miles can she jog in 81 minutes?
zalisa [80]

Answer:

9 miles

Step-by-step explanation:

You need to get 27 minutes to 81 minutes so you multiply 27 by 3, and that is 81, so you simply multiply 3 by 3 and get 9! Hope this helps! ;)

(27 x 3) = 81

(3 x3) = 9

3 0
3 years ago
Let f(x)=(5)x+12. Evaluate f(0) without using a calculator.
Lelu [443]

Answer:

f(0) = 12

Step-by-step explanation:

You want to substitute 0 for x

f(0) = 5(0) + 12

f(0) = 12

8 0
3 years ago
determine if it can be proven that the triangles are congruent if they are the choose a theorem that proves its congruent ​
Lostsunrise [7]

Answer:

These triangles are congruent by SAS

Step-by-step explanation:

They share the same angle which is in the same angle which is the vertical angle with congruent sides on either side of the angle, therefore this is congruent by SAS.

7 0
2 years ago
What is the counterexample for the city of Portland is in Oregon
Dmitry_Shevchenko [17]
A counter example disproves a statement.

The counter example for : the city of Portland is in Oregon would be : the city of Portland is in Maine.

The city named Portland can be found in both states.
7 0
3 years ago
Simplify <br><br> -3(y+4)+4y<br><br> Please ANSWER FAST!!!!!
klemol [59]

Answer: y-12

Step-by-step explanation:

-3(y+4)+4y

first distribute teh -3 to the y and the 4, so you get -3y and -12. Then combine like terms. -3y-12+4y, add the -3y and 4y, you get y. So the answer is y-12.

5 0
2 years ago
Read 2 more answers
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