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2 years ago

Find the value of the trigonometric ratio.

Mathematics

1 answer:

olchik [2.2K]2 years ago

7 0

Answer:

30 / 34 and 15/17 simplified.

Step-by-step explanation:

cos = adjacent / hypotenuse

adjacent is the (base) which is 30 and hypotenuse is the longest side which is 34

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2x -4y=20
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3 years ago

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Step-by-step explanation:

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The height H of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 9

mariarad [96]

Answer:

The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

Step-by-step explanation:

Statement is incorrect. Correct form is presented below:

The height $h(t)$ of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 90 feet per second is given by equation $h(t) = 3 +90\cdot t -16\cdot t^{2}$ , where $t$ is time in seconds. After how many seconds will the ball be 84 feet above the ground.

We equalize the kinematic formula to 84 feet and solve the resulting second-order polynomial by Quadratic Formula to determine the instants associated with such height:

$3+90\cdot t -16\cdot t^{2} = 84$

$16\cdot t^{2}-90\cdot t +81 = 0$ (1)

By Quadratic Formula:

$t_{1,2} = \frac{90\pm \sqrt{(-90)^{2}-4\cdot (16)\cdot (81)}}{2\cdot (16)}$

$t_{1} = 4.5\,s$ , $t_{2} = 1.125\,s$

The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

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3 years ago

What type of transformation transforms (a, b) to (−a, b)?

Vikentia [17]

Hello :
a reflection over the y-axis

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