3 years ago

Please help evaluate this and turn into a fraction

Mathematics

1 answer:

madam [21]3 years ago

6 0

Answer:

The correct answer is marked.

Step-by-step explanation:

You are given the cosine of an angle, and asked to find the corresponding sine. The relation is ...

sin(x)² = 1 - cos(x)²

sin(x)² = 1 - (-4/√305)² = 1 - 16/305 = 289/305

sin(x) = √(289/305) = 17/√305

The arccos function will return an angle in the first or second quadrant. This negative cosine corresponds to a 2nd-quadrant angle. The sine is positive in the second quadrant.

You might be interested in

Which measurement is NOT equivalent to the others? *

Alekssandra [29.7K]

Your answer is 199cm is not equal because of 10mm equal 1cm and 100cm equal 1 meter and 100,000cm equal 1 km. Hope this helps.

3 0

4 years ago

Makayla is teaching Rodney how to construct a square inscribed in a circle.

Yuliya22 [10]

Answer:

Step-by-step explanation:

6 0

4 years ago

Using appropriate properties find: 2/3 × 3/4 + 3/7 × 3/4

Viktor [21]

Answer:

$\frac{23}{28}$

Step-by-step explanation:

$\frac{2}{3} \times \frac{3}{4} + \frac{3}{7} \times \frac{3}{4}$

$= > \frac{3}{4} ( \frac{2}{3} + \frac{3}{7} )$

$= > \frac{3}{4} \times \frac{23}{21}$

Reducing 3 from numerator and denominator,

$= > \frac{23}{4 \times 7} = \frac{23}{28}$

3 0

3 years ago

A rectangular prism has a volume of 1,500

goblinko [34]

Answer:

1500 = 748h

Step-by-step explanation:

Data:

l=34, w=32

Volume=1500

Write an equation of volume of a rectangular prism:

Volume= L x W x H

Substitute Values:

1500=34 x22 x h

Simplify:

1500=748h

7 0

3 years ago

The Jayden family eats at a restaurant that is having a 15% discount promotion. Their meal costs $78.72 before the discount, and

Scorpion4ik [409]

If I’m not mistaking it is either 80.29 or 80.30 after rounding,I’m not sure.

4 0

3 years ago

Read 2 more answers