Answer:
52.8 degree
Step-by-step explanation:
x²=1.9²+2.5²
x²=9.86
x = 3.14 this is SQ
using the sine rule :
sin90/3.14 = sinx/2.5
cross multiply
after cross multiply if you are allowed to use a calculator insert shift sin
you only use this when you want to find the unknown sine angle
The answer is 1 soulution i think
P = 2(L + W)
P = 100
W = 2L - 4
100 = 2(L + 2L - 4)
100 = 2(3L - 4)
100 = 6L - 8
100 + 8 = 6L
108 = 6L
108/6 = L
18 = L ....length is 18 cm
W = 2L - 4
W = 2(18) - 4
W = 36 - 4
W = 32 <== width is 32 cm
Answer:
10.
Step-by-step explanation:
This is a parallelogram so the pair of internal angles add up to 180 degrees.
So 120 + 5x + 10 = 180
5x = 180 - 120 - 10 = 50
x = 50/5
x = 10.