3 years ago

What is the value of b?

Mathematics

1 answer:

tresset_1 [31]3 years ago

8 0

Answer:

Step-by-step explanation:

Using the law of cosines in ΔABC

b² = a² + c² - (2ac cosB) ← substitute in values

= 25² + 28² - (2 × 25 × 28 × cos36.9°)

= 625 + 784 - 1400 cos36.9°

= 1409 - 1400 cos36.9° ( Take the square root of both sides )

b = $\sqrt{1409-1400cos36.9}$ ≈ 17 ( nearest whole number )

You might be interested in

What is the value of 2 1/5 +3 4/5=

navik [9.2K]

Answer:

Step-by-step explanation:

I like to line up my addition problems vertically

2 1/5

+ 3 4/5

--------------

5 5/5

but 5/5 = 1

5 + 1

5 0

3 years ago

What is √75 in simplest form? A. 25√3 B. 3√5 C 5√3 D. 5√50

umka21 [38]

Answer:

Step-by-step explanation:

The square root of 75 is approximately 8.66025 or 5√3 in radical form. The factors of 75 can help in finding its square root.

Hope this helps:)

6 0

3 years ago

Read 2 more answers

Jane has 15 coins in total of $2.18. She has 5 more quarters than nickels, has 3 pennies and dimes. How many quarters, nickels,

fredd [130]

She has 7 quarters two nickels and 3 dimes

8 0

3 years ago

A choir teacher is dividing 15 sopranos and 36 altos into the singing groups. He wants each group to have the same combination o

SCORPION-xisa [38]

Answer:

3 groups of 5 sopranos and 12 altos

Step-by-step explanation:

8 0

3 years ago

Cara is picking out fabric for her bedroom. She has 12 fabric samples, and 2 of them are solid. What is the probability that a r

RSB [31]

I think that its 6 cause 12 / 6 =2

5 0

3 years ago