3 years ago

Advantage and disadvantage of using a secondary data

1 answer:

5 0

Advantage-extra work\data to compare first data with.

Disadvantage-Your data might change over time.

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allsm [11]

Answer:

c = 55° and d = 125°

Explanation:

Given that,

$\angle a=85^{\circ}\\\\\angle b = 40^{\circ}$

We need to find the measure of angle c and angle d.

We know that the sum of angles of a triangle is 180 degrees. So,

a+b+c = 180

85+40+c = 180

125+c=180

c = 180-125

= 55°

Using exterior angle theorem,

d = a+b

d = 85+40

d = 125°

Hence, c = 55° and d = 125°

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