3 years ago

Answer these questions please

Mathematics

2 answers:

OLga [1]3 years ago

5 0

Answer:

I hope it will help you :)

Rama09 [41]3 years ago

4 0

Step-by-step explanation:

find what is common

then bring it out

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Chose the missing side length and the trigonometric ratio you would use to calculate.

Over [174]

Answer:

The missing value is 2.9mm and cosine was used

Step-by-step explanation:

Given triangle is a right-angled triangle we can use trigonometric ratios to calculate the missing length.

In the given triangle,

Base = k

Hypotenuse = 15mm

Angle = 79

We will use trigonometric ratio which includes base and hypotenuse.

Using cosine,

$cos\ (angle) = \frac{Base}{hypotenuse}\\cos\ 79 = \frac{k}{15}\\k = cos\ 79 * 15\\k = 0.1908*15\\k = 2.862$

Rounding off to nearest tenth

$k= 2.9mm$

Hence,

The missing value is 2.9mm and cosine was used

3 0

3 years ago