Question

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Find C.
Round to the nearest tenth.
20 ft
22 ft
B
A 18 ft
C = [?]
o

Answer 1

Answer:

50.5

Step-by-step explanation:

Answer 2

The required value of angle C of the triangle is   .

Given
For triangle ABC
A = 22 ft ; b = 20 ft ; c = 18 ft
Angle C = to be determined
c² =a² + b² - 2 * a * b *cosC

What are trigonometric equations?

These are the equation that contains trigonometric operators such as sin, cos.. etc.. In algebraic operation.

Here,
a = 22 ft ; b = 20 ft ; c = 18 ft

put this values in equation  c² =a² + b² - abcosC

18² = 22² + 20² - 2 * 20 * 22 * cosC
324 = 484 + 400 - 880 * cosC
cosC = (1284 - 324)/880
cosC = 0.64
C = $cos^{-1}(0.64)$
C = 50.2

Thus the required value of the angle C in the triangle ABC is 50.2°.

Learn more about trigonometry equations here:

brainly.com/question/22624805

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