How do you use the half angle formula for
sin (5π/12)?

Hannah is 3 years older than twice her brother joey’s age. joey is 2 years old. how old is hannah? show all of your work! the number of students is five more than seven times the number of teachers. there are 10 teachers. how many students are there? be sure to show all of your work!

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

What is the order of these fractions from least to greatest 2/3 7/10 5/8 65/100