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3.What is the measure of angle d₁º?

4.What is the tangent ratio of angle c₂?

3.What is the measure of angle d₁º? 4.What is the tangent ratio of angle c₂?-example-1
User Eduard Uta
by
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1 Answer

5 votes

Explanation:

remember answer 2.

3. I answered already in my other answer.

remember, the diagonals split the angles in half.

so,

d1 = 50°

4. the tangent ratio is sine/cosine (that is the definition of tangent).

c2 = 40°

sin(40) × 5 = OD (half of BD)

cos(40) × 5 = OC

the tangent ratio is

(sin(40) × 5) / (cos(40) × 5) = sin(40)/cos(40) = OD/OC =

≈ 3.2 / 3.8 = 1.6/1.9 =

= 0.842105263...

control : tan(40) = 0.839099631... close enough (we used round numbers with 3 2 and 3.8 - see again 1. and 2.).

User Daphney
by
8.7k points
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