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Vlada [557]
2 years ago
7

Given: m space measured angle space B equals 18 degree, b = 9, and c = 20. Find m space measured angle space C degree to nearest

whole number.
Mathematics
1 answer:
Montano1993 [528]2 years ago
5 0

Given the measure of angle B, side b and side, the measure of angle C to the nearest whole number is 43 degrees.

<h3>What is the measure of angle space C?</h3>

From the Rule of Sine;

sinA/a = sinB/b = sinC/c

Where A,B and C are the angles of the triangle and a, b and c are the corresponding opposing sides.

Given that;

  • Angle B = 18°
  • side b = 9
  • side c = 20
  • Angle C = ?

Using the rule of sine.

sinB/b = sinC/c

We substitute the given values into the equation

sin( 18° )/9 = sinC/20

We solve for C.

sin( 18° ) × 20 = sinC × 9

0.309016994 × 20 = sinC × 9

6.18033988 = sinC × 9

Divide both sides by 9

6.18033988/9 = (sinC × 9)/9

sinC = 0.686704431

C = sin⁻¹( 0.686704431 )

C = 43.3697°

C = 43°

Given the measure of angle B, side b and side, the measure of angle C to the nearest whole number is 43 degrees.

Learn about cosine rule here: brainly.com/question/20839703

#SPJ1

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