Answer:
90 - 43 = x
Step-by-step explanation:
Answer:
c ≈ 4.2 ft
Step-by-step explanation:
Using the cosine rule with a = 7, b = 8 and C = 32°, then
c² = 7² + 8² - (2 × 7 × 8 × cos32°)
= 49 + 64 - (112 × cos32°)
= 113 - 94.98
c = ≈ 4.2 ft ( to the nearest tenth )
The answer is C. since a triangle has to have a total of 180 degrees, you have to add both of the degrees of both the angles. 60 + 60= 120.
180-120=60
Your last angle is 60 degrees.
Answer:
D. x=15° is the correct answer, hope this helps.
Step-by-step explanation:
The measurement of the outer angle is the semi-difference of the arcs it encompasses.
see the attached figure to better understand the problem
∠x=(1/2)[arc AB-arc CD]
arc AB=40°
Remember that the diameter divide the circle into two equal parts
arc CD=180°-(130+40)°=10°
substitute
∠x=(1/2)[40°-10°]=15°