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3 years ago

In triangle ABC, and C is a right angle. Find the value of the trig function find the sec(A) if C=25, B=20, A=15

Mathematics

1 answer:

asambeis [7]3 years ago

5 0

Answer:

sec A = 5/4

Step-by-step explanation:

Sec of an angle is hypotenuse/adjacent side

In your problem, sec A = 25/20 = 5/4

It helps if you can draw a figure of the problem. Make sure you memorize the definition of each trig function

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In triangle abc, if A=120 degrees, a=8 and b=3, then angle B=

CaHeK987 [17]

The angle of B is $\angle B=19^{\circ}$

Explanation:

It is given that $\angle A=120^{\circ}$ and $a=8, b=3$

To determine the $\angle B$ , let us use the law of sine formula.

Thus, we have,

$\frac{Sin A}{a} =\frac{Sin B}{b}$

Substituting the values in the formula, we have,

$\frac{Sin 120}{8} =\frac{Sin B}{3}$

Multiplying both sides by 3,we get,

$\frac{3(0.866)}{8} ={Sin B}$

Simplifying and dividing, we get,

$0.32475=Sin B$

Multiplying both sides by $\sin ^{-1}$ , we get,

$\sin ^{-1}(0.32475)=B$

Thus, $B=18.95^{\circ}=19^{\circ}$

Hence, The angle of B is $\angle B=19^{\circ}$

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3 years ago

8 x 2/3 x (-6) x (3/4) x (-1)

ANTONII [103]

Simplify the following:

(-6 (-8)×2×3 x x x x)/(3×4)

(8 x×2 x (-6) x×3 x (-1))/(3×4) = (8 x^4×2 (-6)×3 (-1))/(3×4):

(-6 (-8)×2×3 x^4)/(3×4)

8×2 = 16:

(-6 (-3)16 x^4)/(3×4)

16 (-6) = -96:

(-3-96 x^4)/(3×4)

-96 (-3) = 288:

(288 x^4)/(3×4)

3×4 = 12:

(288 x^4)/12

1 | 2 | | 2 | 4

| 2 | 8 | 8

- | 2 | 4 |

| | 4 | 8

| - | 4 | 8

| | | 0:

Answer: 24 x^4

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3 years ago

Find the measure of angle ABC

enot [183]

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3 years ago

Read 2 more answers

Hi, can you help me answer this question, please, thank you!

frutty [35]

Given:

mean, u = 0

standard deviation σ = 1

Let's determine the following:

(a) Probability of an outcome that is more than -1.26.

Here, we are to find: P(x > -1.26).

Apply the formula:

$z=\frac{x^{\prime}-u}{\sigma}$

Thus, we have:

$\begin{gathered} P(x>-1.26)=\frac{-1.26-0}{1} \\ \\ P(x>-1.26)=\frac{-1.26}{1}=-1.26 \end{gathered}$

Using the standard normal table, we have:

NORMSDIST(-1.26) = 0.1038

Therefore, the probability of an outcome that is more than -1.26 is 0.1038

(b) Probability of an outcome that

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1 year ago