Find the exact value of sin (arccos(-3/4))

1 answer:

6 0

The exact value is
sin(arccos(3/4))The equation for cosine is cos(A)=AdjacentHypotenuse. The inside trig function is arccos(3/4), which means cos(A)=3/4. Comparing cos(A)=AdjacentHypotenuse with cos(A)=3/4, find Adjacent=3 and Hypotenuse=4. Then, using the pythagorean theorem, find Opposite=√7.Adjacent=3Opposite=√7Hypotenuse=4Substitute in the known variables for the equation sin(A)=OppositeHypotenuse.sin(A)=√7 over 4Simplify.√7 over 4

You might be interested in

NEED HELP NOW !!!!!!! The ratio of teachers to students on a field trip to the art museum is supposed to be 1 : 5. Which group d

WINSTONCH [101]

Answer:

B. 4 teachers : 25 students

Step-by-step explanation:

deberían ser 5 maestros o 20 estudiantes.

8 0

2 years ago

Read 2 more answers

Please help. Part 2: What is the correct standard form of the equation of the parabola?

Anastaziya [24]

Answer:

The answer is (X +2)^2 = 4(Y -5).

6 0

2 years ago

Which is the equation of a circle that has a center of (-1, 3) and passes through the point (3, 6)?

Anna [14]

 the answer is 15. Hope this will help u.....

4 0

3 years ago

Read 2 more answers

the population of a school is 400 students. Next year it is expected to be about 120% of what it is now. Choose next year's stud

Gelneren [198K]

Given:
this year's population: 400 students
next year's population: 120% of this year's population

this year's population x rate of next year's population = next year's population

400 students * 120% = 480 students CHOICE D.

There will be 480 students next year.

5 0

2 years ago

I need help anybody ?

nasty-shy [4]

Answer and Step-by-step explanation:

Simply use the Pythagorean Theorem to solve.

The Pythagorean Theorem is used to solve for a side in right triangles.

$A^{2} +B^{2}= C^{2}$