Tan(a/2) = sin a / (1 + cos a)
tan(45/2) = sin(45) / (1 + cos(45)) = (1/√2) / (1 + 1/√2) = (1/√2) / (√2 + 1)/√2 = 1/(√2 + 1) = (√2 - 1)
Answer:
8
Step-by-step explanation:
3 divided by 4.8 = 0.625
5 divided by 0.625 = 8
Answer:
5x+5y=15
Step-by-step explanation:
<span>The number 80 is <span>25%</span> of <span>320</span></span>
Lets start with the parenthesis. 1/8 divided by 3/4 is the same as 1/8 times 4/3 which is 4/24 simplified is 1/6. 5/6-1/6=4/6 and 4/6 can be simplified to 2/3
