3 years ago

Find cos(a) in the triangle.

Mathematics

1 answer:

kakasveta [241]3 years ago

3 0

What triangle? you need to show the triangle

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The sum of two angles is 90°. The difference of twice the larger angle and the smaller angle is 105º. The system of linear equat

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Answer:

x = 65, y = 25

Step-by-step explanation:

Given system of linear equations:

x + y = 90
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3 years ago

In the diagram of circle O, what is the measure of ? 27° 54° 108° 120°

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Answer:

Option (2).

Step-by-step explanation:

This question is incomplete; here is the complete question and find the figure attached.

In the diagram of a circle O, what is the measure of ∠ABC?

27°

54°

108°

120°

m(minor arc $\widehat {AC}$ ) = 126°

m(major arc $\widehat {AC}$ ) = 234°

By the intersecting tangents theorem,

If the two tangents of a circle intersect each other outside the circle, measure of angle formed between them is half the difference of the measures of the intercepted arcs.

m∠ABC = $\frac{1}{2}[m(\text {major arc{AC})}-m(\text{minor arc} {AC})]$

= $\frac{1}{2}(234-126)$

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Therefore, Option (2) will be the answer.

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