How would you set up to solve for angle b using trigonometry?

The sum of angles of any triangle is always 180 degrees

Now here

Angle A = 25° , Angle C = 90°

Now A+B+C= 180

25° +B + 90°=180°

115° +B = 180°

Subtract 115° from both sides

115°-115° +B = 180°-115°

B=65°

Angle B = 65 degrees

answer would be 8.64 or s = 11π/4 inches

step-by-step explanation:

s = r θ  

where s = arc length  

r = radius = 3 inches  

θ = central angle in radians = ( π /180)*165  

s = 3(π/180)*165  

= 8.64 inches

the answer is d

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