2 years ago

The sine of 49° is equal to the cosine of what angle?

1 answer:

6 0

Sinα=cos(90-α) this is an identity which you need to know...

in this case:

sin49°=cos41°

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Inga [223]

Answer:

The answer is x = -6

PLZ GIVE ME BRAINLIEST!!!!

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2 years ago

Y_Kistochka [10]

Answer:

(x+4y)(x-4y)

Step-by-step explanation:

Since

$\large a^2-b^2=(a+b)(a-b)$

we can see that

$\large x^2-16y^2=(x+4y)(x-4y)$

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2 years ago

stira [4]

Answer:

I think its A, Because if you look at the problome A makes sense

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2 years ago

True [87]

It’s the second one it’s right

8 0

2 years ago

ladessa [460]

Answer: isosceles

Step-by-step explanation:

By the alternate interior angles theorem, $\angle CAB=50^{\circ}$

Since angles in a triangle add to 180 degrees, $\angle ACB=180^{\circ}-80^{\circ}-50^{\circ}=50^{\circ}$

Since sides opposite equal angles in a triangle are equal, $AB=BC$ .

So, triangle ABC is <u>isosceles</u>

7 0

1 year ago