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3 years ago

What is the area of triangle GHJ

Mathematics

1 answer:

EastWind [94]3 years ago

4 0

A = 1/2 bh = 1/2 (3)(4) = 12/2 = 6

answer is B. 6 square units

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DedPeter [7]

Answer:

616 in²

Step-by-step explanation:

14 × 14 × 22/7

=> 616

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3 years ago

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Find the magnitude of angle A if cos A = 0.5

Hitman42 [59]

Step-by-step explanation:

$A = {cos}^{ - 1} 0.5 \\ \: \: A= 60$

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2 years ago

Given sin theta = 1/3 and 0 theta pi/2 find tan 2 theta

Kazeer [188]

Answer:

$\tan2\theta=\pm\dfrac{4\sqrt{2}}{7}$

Step-by-step explanation:

Given: $\sin\theta = \dfrac{1}{3}$

$0\leq \theta \leq \dfrac{\pi}{2}$

Theta lie in first quadrant.

Multiply both sides by 2

$0\leq 2\theta \leq \pi$

2theta lie in I and II quadrant.

$\tan2\theta$ is positive in I and negative in II quadrant.

$\sin\theta=\dfrac{1}{3}$

$\cos\theta=\dfrac{2\sqrt{2}}{3}$

$\sin2\theta=2\sin\theta\cos\theta$

$\sin2\theta=2\cdot \dfrac{1}{3}\cdot \dfrac{2\sqrt{2}}{3}=\dfrac{4\sqrt{2}}{9}$

$\cos2\theta=\pm \sqrt{1-\sin^22\theta}=\pm\dfrac{7}{9}$

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Hence, The value of $\tan2\theta=\pm\dfrac{4\sqrt{2}}{7}$

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3 years ago

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A survey was conducted

inna [77]

Answer: 9/25 or 36%

Step-by-step explanation:

72 + 28 + 62 + 38 = 200

There are 200 people in total and 72 are youngsters who like sport cars.

So, the number of youngsters who like cars out of the total number of people is 72/200.

Now, find a greatest common divisor. In this case, the greatest common divisor is 8.

72 / 8 = 9

200 / 8 = 25

9/25 (fraction)

25 * 4 = 100

9 * 4 = 36

36/100 = 36% (percentage)

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3 years ago

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Georgia [21]

I hope this helps you

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3 years ago

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