3 years ago

What is the trigonometric ratio for cos C?

1 answer:

8 0

You remember from SOH CAH TOA that
.. Cos = Adjacent/Hypotenuse
.. cos(C) = 80/82 = 40/41 . . . . . . . . . . . seems to match the last selection

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Match each of the trigonometric expressions below with the equivalent non-trigonometric function from the following list. Enter

andreev551 [17]

Answer:

Step-by-step explanation:

In each case, draw the right triangle which produces the inverse trig value. That is, label the two sides as needed, and calculate the third side.

It should be clear that

$tan(sin^{-1} x/4) = x/\sqrt{16-x^{2} }$

$sin(tan^{-1} x/4) = x/\sqrt{16+x^{2} }$

sin(2α) = 2 sinα cosα

So,

$1/2 sin(2sin^{-1} x/4) = (1/2)(x/4) * x/\sqrt{16-x^2} = x^{2} /(8\sqrt{16-x^2})$

See what you can do with the others.

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3 years ago

Write the first 4 terms of the sequence defined by the rule. f(n) = n + 10

marshall27 [118]

Answer:

n(1) = 11, n(2) = 12, n(3) = 13, n(4) = 14

Step-by-step explanation:

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3 years ago

5) The scale of a map is 1 inch : 10 miles.

stich3 [128]

Answer:

Step-by-step explanation:

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3 0

2 years ago

Last year there were 120 students in choir. This year, 30% more students took choir. How many students are taking choir this yea

hjlf

Answer:

120 into a third and divide and the answer

Step-by-step explanation:

160

7 0

3 years ago

Which represents the solution(s) of the graphed system of equations, y = x2 – 2x and y = –2x – 1? (1, –1) (0, 0) and (0, –1) (0,

olganol [36]

ANSWER

No solution

EXPLANATION

The first equation is

$y = {x}^{2} - 2x$

and the second equation is

$y = - 2x - 1$

We equate the two equations to obtain;

${x}^{2} - 2x = - 2x - 1$

This implies that

${x}^{2} = - 2x + 2x - 1$

${x}^{2} = - 1$

There is no real number whose square is -1.

Therefore, the equation has no solution.

6 0

3 years ago

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