Y<1/2x+1 is true..............................
Answer:
200-50-40=B
B =110 blue pieces
Step-by-step explanation:
It is 30 because circumference is 3xdiameter
Diameter is 2x5=10
10x3=30
Answer:
2.99 i think
Step-by-step explanation:
Answer:
Below.
Step-by-step explanation:
I'll write sin x as s and cos x as c so we have:
(1 + s +c)/(1 + s - c) = (1 + c)/s
Cross multiplying:
s + s^2 + cs = 1 + s - c + c + cs - c^2
s + s^2 + cs = 1 + s + cs - c^2
s^2 + c^2 + s - s + cs - cs = 1
s^2 + c^2 = 1.
- that is sin^2 x + cos^2 x = 1 which is a known identity.
Therefore the original identity is proved.
