Help please please help me on this

Need ! easy 6th grade work! i will put as much points as i can! you so much! i’m learning this in math and it’s soo

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3