Answer:
Step-by-step explanation:
We are given that:
And we want to find the value of cos(A) and sin(A).
Recall that tangent is the ratio of the opposite side to the adjacent side.
Therefore, the opposite side measures 2<em>ab</em>, and the adjacent side measures <em>a</em>² - <em>b</em>².
Using the Pythagorean Theorem, solve for the hypotenuse:
Thus, our hypotenuse is given by <em>a</em>² + <em>b</em>².
Cosine is the ratio between the adjacent side and the hypotenuse. Thus:
And sine is the ratio between the opposite side and the hypotenuse. Thus:
In conclusion:
He was 20 when his son was born.
He was 40 when he was twice as old.
Suppose that the number u were thinking about is x thus :
Multiply both sides by 4
Divide both sides by 3
Well, the reduced fraction would be 1 / 4. In order to find other fractions equivalent to 7 / 28, you should pick a number and multiply it by both the numerator and the denominator. The sum is an equivalent fraction.
For example-
2 / 2 x 7 / 28 = 14 / 56
7 / 28 is equivalent to 14 / 56
Answer:
B. 16.9
Step-by-step explanation:
Reverse Pythagoreans theorem C^2 - B^2 = A^2 so
7^2 - 5^2 = c^2 and it comes out to
49-25 = 24 the square root of that is 4.9 (rounded)
But we are lookign for the perimeter so
4.9 + 7 + 5 = 16.9