How do you find an explicit formula?

1 answer:

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If you can find an explicit formula for a sequence, you will be able to quickly and easily find any term in the sequence simply by replacing n with the number of the term you seek. An explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location).

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Please help me with this question

Brrunno [24]

Answer:

a=50 degrees

Step-by-step explanation:

Look at the triangle in the middle. You can find two missing angles to calculate the third one.

50 and 130 are supplementary, so 50 must be the upper right angle. The angle opposite to 80 has to be equal to it, of the upper left angle is 80.

A triangle is 180 degrees total, and 180-(50+80)= 50.

The missing angle for the triangle is 50, and since "a" is opposite to it, the values are equal.

a=50 degrees

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