Mathematics: Whats is 3.25 times ten to the power of 4 in ordinary number

Look at the picture.We have the pointCalculate r:Substitute:...

Whats is 3.25 times ten to the power of 4 in ordinary

Ответ:

adriandehoyos1p3hpwc

13.07.2021

Look at the picture.

$r=\sqrt{x^2+y^2}-\text{from the Pythagorean theorem}\\\\\sin\theta=\dfrac{y}{r}\\\\\cos\theta=\dfrac{x}{r}\\\\\tan\theta=\dfrac{y}{x}\\\\\cot\theta=\dfrac{x}{y}$

We have the point

$(4,\ -8)\to x=4,\ y=-8$

Calculate r:

$r=\sqrt{4^2+(-8)^2}=\sqrt{16+64}=\sqrt{80}=\sqrt{16\cdot5}=\sqrt{16}\cdot\sqrt5=4\sqrt5$

Substitute:

$\cos\theta=\dfrac{4}{4\sqrt5}=\dfrac{1}{\sqrt5}\to\boxed{C)}$

Find the cos(θ) of an angle in standard position if the terminal side passes through the point (4, -

0,0(0 оценок)

Whats is 3.25 times ten to the power of 4 in ordinary number

Ответ:

Ответ:

Ask your question to the AI advisor

More tips

Answers on questions: Mathematics

Ask an AI advisor a question