3 years ago

How would you find arctan without a calculator?

Mathematics

1 answer:

e-lub [12.9K]3 years ago

8 0

Answer:

Tangent Inverse Function

Step-by-step explanation:

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3 years ago

In the rectangular trapezoid ABCD AC is driven by a CD (see figure).

eimsori [14]

Answer:

solution given:

let's see only in a right-angled triangle Δ ACD.

AC=3 units

AD=5 units

since Δ ACD is a right-angled triangle. It satisfies Pythagoras law

$AD^{2}=AC^{2}+CD^{2}$

25=9+ $CD^2$

$CD^2$ =25-9=16

$CD=\sqrt{16} =4 units$

Now

Area of rectangle Δ ACD= $\frac{1}{2} CD*AC=\frac{1}{2}*4*3=6\: square \:units$

similarly,

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since AB=CE=2.4 units

Δ ACE is a right-angled triangle. It satisfies Pythagoras law.

$AC^{2}=AE^{2}+CE^{2}\\3^2=AE^2+2.4^2\\9-5.76=AE^2\\AE and BC=\sqrt{1.24} =1.11 units$

now

area of trapezoid=area ofΔACD+Area of ΔABC

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2 years ago

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geniusboy [140]

Answer:

1 = 61

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Step-by-step explanation:

Alternate angles

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