Answer:
( -5 ). k
Step-by-step explanation:
cause 5 is inside and know out
Answer:
1. H = 29 cm
2. θ = 44°
Step-by-step explanation:
1. We can find the height of the triangle by considering the isosceles triangle as two right triangles. The height can be found by using Pitagoras:
![L^{2} = H^{2} + B^{2}](https://tex.z-dn.net/?f=%20L%5E%7B2%7D%20%3D%20H%5E%7B2%7D%20%2B%20B%5E%7B2%7D%20)
Where:
L: is the sides of the isosceles triangle = 42 cm
B: is the base = 30 cm
H: is the height =?
Then, the height is:
![H = \sqrt{L^{2} - B^{2}} = \sqrt{(42 cm)^{2} - (30 cm)^{2}} = 29.4 cm = 29 cm](https://tex.z-dn.net/?f=%20H%20%3D%20%5Csqrt%7BL%5E%7B2%7D%20-%20B%5E%7B2%7D%7D%20%3D%20%5Csqrt%7B%2842%20cm%29%5E%7B2%7D%20-%20%2830%20cm%29%5E%7B2%7D%7D%20%3D%2029.4%20cm%20%3D%2029%20cm%20)
2. The two equal angles (θ) can be found using the following trigonometric identity:
![cos(\theta) = \frac{B}{L}](https://tex.z-dn.net/?f=%20cos%28%5Ctheta%29%20%3D%20%5Cfrac%7BB%7D%7BL%7D%20)
![\theta = cos^{-1}(\frac{30 cm}{42 cm}) = 44.4^{\circ} = 44^{\circ}](https://tex.z-dn.net/?f=%20%5Ctheta%20%3D%20cos%5E%7B-1%7D%28%5Cfrac%7B30%20cm%7D%7B42%20cm%7D%29%20%3D%2044.4%5E%7B%5Ccirc%7D%20%3D%2044%5E%7B%5Ccirc%7D%20)
Hence, the two equal angles are 44°.
I hope it helps you!
Answer:
yea you got it right its c
Step-by-step explanation:
I think the answer is 11 - 6√3.
Its A 7 considering you minus 13 which is 2 or 3 cups and 6 which is 6 or 7 cups, so 13-6=7