Solve for x 60 50 40 30

Mathematics

1 answer:

Otrada [13]2 years ago

3 0

Answer:

40. C. 40
41. B. ∠ACE ≅ ∠ECB

Step-by-step explanation:

The triangle with angle x is isosceles as two sides marked as same.

The two angles opposite to equal sides measure x.

<u>Sum of interior angles of the triangle is:</u>

100 + 2*x = 180
2x = 180 - 100
2x = 80
x = 40

Common angle of the two triangles is angle C.

Correct choice is B

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NNADVOKAT [17]

Hello,

If you are starting with the angle of 40 degrees, you have an adjacent side and hypotenuse. Therefore, it is a cosine relationship.

We can write:

cos(40) = adj / hyp
cos(40) = x / 220

To solve for x, simply multiply 220 by the cos(40).
You can write it as: 220 cos(40)

Good luck,
MrEQ

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3 years ago

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