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Anastaziya [24]
3 years ago
14

Omar wants to determine cos(- (2pi)/3) using the ratios of the 30 degrees - 60 degrees - 90 degrees right triangle . How shoulc

he use this information to determine cos(- (2pi)/7)
Mathematics
1 answer:
Zinaida [17]3 years ago
7 0

Answer:use the reference angle if a 30°and the fact that -2pi/3 is in the 3rd quadrant to determine coz

Step-by-step explanation:

i dont know if this is right just an educational guess, came here looking for the answer but couldn’t find it so

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These triangles are congruent by the triangle congruence postulate [?]
Vinvika [58]

Given:

A figure of two congruent triangles.

To find:

The triangle congruence postulate by which the given triangles are congruent.

Solution:

First label the vertices as shown below.

In triangle ABC and triangle CDA,

AB\cong CD                   (Given)

\angle BAC\cong \angle DCA                   (Given)

AC\cong AC                  (Common side)

The corresponding two sides and their included angle are congruent in both triangles. So, triangles are congruent by SAS congruence postulate.

\Delta ABC\cong \Delta CDA            [SAS congruence postulate]

Therefore, the correct option is B.

5 0
3 years ago
Maija is bicycling north on a straight path. She bicycles for
alukav5142 [94]

Answer:

The awnser is 19 Kilometers

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3 years ago
What is the rate of change for the function f(x)=2x-3
Stolb23 [73]

Answer:

2

Step-by-step explanation:

f(x) = 2x - 3 is a linear function

The rate of change of a linear function is the measure of the slope.

The equation is in slope- intercept form, that is

y = mx + c ( m is the slope and c the y- intercept )

y = 2x - 3 has slope m = 2

Thus rate of change = 2

4 0
3 years ago
What is 9.35 as a fraction
denpristay [2]
9.35

= 9.00 + 0.35

= 9 + 7/20

= 180/20 + 7/20

= 187/20
5 0
3 years ago
Read 2 more answers
Please help me!!! Please? Ive been asking since yesterday<br> 8th grade math
suter [353]
I am pretty sure the answer is c. I hope this helps
4 0
3 years ago
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