I’m gonna say c, but I’m not for sure
Step-by-step explanation:
(1 - cos²A) (1 + tan²A) = tan²A
(sin²A)(sec²A) = tan²A
(sin²A)(1/cos²A) = tan²A
(sin²A)/(cos²A) = tan²A
tan²A = tan²A → <u>Proved</u>
Answer Step-by-step explanation:
Let z = 3x +2. Then the equivalent quadratic equation can be written as
z² +7z -8 = 0
_____
This can be factored as
(z -1)(z +8) = 0
which has solutions
z = {1, -8}.
Then the corresponding values of x are found from
z = 3x +2
z -2 = 3x
(z -2)/3 = x
For z = 1,
(1 -2)/3 = x = -1/3
For z = -8
(-8 -2)/3 = x = -10/3
<span><u><em>Answer:</em></u>
The number is 4
<u><em>Explanation:</em></u>
Assume that the number we are looking for is x.
We are given that when this number is multiplied by itself three times, the result would be 64.
<u>This means that:</u>
x * x * x = 64
x</span>³<span> = 64
<u>Taking the cubic root for both sides:</u>
x = </span>∛64<span>
x = 4
Hope this helps :)</span>