2 years ago

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

Mathematics

2 answers:

krok68 [10]2 years ago

7 0

Step-by-step explanation:

So, this way we can do. Thank you!

liberstina [14]2 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>

You might be interested in

The perimeter of the triangle shown is 32 ft what is the value of x

dolphi86 [110]

Where's X located at on the triangle
side a
side b
side c

3 0

2 years ago

PLEASE HELP ME. I WILL GIVE GIVE YOU BRAINLIEST. But only if the answers are correct

-Dominant- [34]

Answer:

12 I wanna say!!!!!!!!!!!!

8 0

3 years ago

Read 2 more answers

A store manager paid $95 for an item and set the selling price at $116.85. What was the percent markup?

Neporo4naja [7]

We have been given that a store manager paid $95 for an item and set the selling price at $116.85. We are asked to find the percent mark-up.

We will use percent increase formula to solve our given problem.

$\text{Percent increase}=\frac{\text{Final}-\text{Initial}}{\text{Initial}}\times 100\%$

$\text{Percent increase}=\frac{\$116.85-\$95}{\$95}\times 100\%$

$\text{Percent increase}=\frac{\$21.85}{\$95}\times 100\%$

$\text{Percent increase}=0.23\times 100\%$

$\text{Percent increase}=23\%$

Therefore, the mark-up will be 23% and option 'b' is the correct choice.

6 0

2 years ago

Kiyo used to wire fencing to form a border around a circular region in his backyard. If the radius of the circular region was 5

kakasveta [241]

Answer:

The total length of the border is $31.4\ yd$

Step-by-step explanation:

we know that

The circumference of a circle is equal to

$C=2\pi r$

we have

$r=5\ yd$

assume

$\pi=3.14$

substitute

$C=2(3.14)(5)=31.4\ yd$

6 0

3 years ago

Can you please help me??!

MakcuM [25]

Answer:

Angle A- -3, 2

Angle B- 0, 1

Angle C- 0, -2

3 0

2 years ago

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

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