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4 years ago

How many triangles can you construct with the angle measures of 50, 70, and 100?

Mathematics

1 answer:

lidiya [134]4 years ago

6 0

Answer:

Step-by-step explanation:

You can't construct any triangles with those angles. Because when you add all the angles of a triangle, it has to add up to 180. But when we add 50,70, and 100, it equals 220. So you can't construct any triangles.

Hope this helps.<em> (If it does, please mark me brainliest)</em>

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Verify sin^4x-sin^2x=cos^4x-cos^2x is an identity

lara [203]

ANSWER

See below

EXPLANATION

We want to verify that,

${ \sin ^{4} x} - { \sin^{2} x} = { \cos ^{4} x} - { \cos^{2} x}$

To verify this identity, we can take the left hand side simplify it to get the right hand side or vice versa.

${ \sin ^{4} x} - { \sin^{2} x} =( { \sin ^{2} x} )^{2} - { \sin^{2} x}$

${ \sin ^{4} x} - { \sin^{2} x} ={ \sin ^{2} x}({ \sin ^{2} x} - 1)$

${ \sin ^{4} x} - { \sin^{2} x} ={ \sin ^{2} x} \times - (1 - { \sin ^{2} x})$

${ \sin ^{4} x} - { \sin^{2} x} =({1 - \cos^{2} x} )\times - ({ \cos^{2} x})$

${ \sin ^{4} x} - { \sin^{2} x} =({ \cos^{2} x} - 1 )\times ({ \cos^{2} x})$

We now expand the right hand side to get:

${ \sin ^{4} x} - { \sin^{2} x} = { \cos ^{4} x} - { \cos^{2} x}$

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3 years ago

Melissa working alone could clean one third of the area in one hour how much of the area could she clean in half of an hour.

docker41 [41]

Melissa could clean one sixth of the area in half and hour because you divide by 2 since 60 divided by 2 is 30 and she has half as much time

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3 years ago

Circumference with radius 5

BlackZzzverrR [31]

Answer:

the answer is 31.42

Step-by-step explanation:

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Ratling [72]

it is -4

Step-by-step explanation:

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3 years ago