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3 years ago

What is the area of this triangle? please help me.

Mathematics

2 answers:

motikmotik3 years ago

8 0

Answer:

6 units²

Step-by-step explanation:

The area (A) of a triangle is calculated using the formula

A = $\frac{1}{2}$ bh ( b is the base and h the height )

here b = DE = 3 units and

h is the distance from the vertex F to DE = 4 units, hence

A = $\frac{1}{2}$ × 3 × 4 = 6 units²

olchik [2.2K]3 years ago

5 0

Answer:

Step-by-step explanation:

Area of a triangle: bh/2

4*3/2=6

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3 years ago

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brilliants [131]

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3 years ago

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Lyrx [107]

Answer:

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4 0

3 years ago

given that sin theta= 1/4, 0 is less than theta but less than pi/2, what is the exact value of cos theta

lapo4ka [179]

Answer:

$\cos{\theta} = \frac{\sqrt{15}}{4}$

Step-by-step explanation:

For any angle $\theta$ , we have that:

$(\sin{\theta})^{2} + (\cos{\theta})^{2} = 1$

Quadrant:

$0 \leq \theta \leq \frac{\pi}{2}$ means that $\theta$ is in the first quadrant. This means that both the sine and the cosine have positive values.

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$\cos{\theta} = \pm \sqrt{\frac{15}{16}}$

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3 years ago