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Eduardwww [97]
3 years ago
13

NI The cosine of 50 degrees is 0.64. What is the sine of 40 degrees?

Mathematics
1 answer:
Radda [10]3 years ago
5 0

Answer:

Step-by-step explanation:

sin (90° - ∅) = Cosine ∅

40 = 90 - 50

sin (40°) = sin (90° - 50°) = Cosine 50° = 0.64

sin (40°) = 0.64

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A slice of pizze is shaped like an isosceles triangle. If the tip is 32°, how big are the base angles?
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The base angles are both 74°

Further explanation:

An isosceles triangle is a type of triangle that has two sides and two angles equal.

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If A is 32 then B and C will be equal

The internal angles of a triangle are 180°

So,

m∠A+m∠B+m∠C=180°

We know that B and C are equal

m∠B=m∠C

So putting the value of A and replacing C by B

32°+m∠B+m∠B=180°

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m∠B=74°

As

m∠B=m∠C

So

m∠C=74°

The base angles are both 74°

Keywords: Isosceles Triangle, Angles

Learn more about Isosceles triangle at:

  • brainly.com/question/2116906
  • brainly.com/question/2131336

#LearnwithBrainly

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