Lookin Castle's Four Figure Tables.
Select 'Sine Table.
Gone down the column to 7.5 degrees. to find the given values.
OR more conventiently
On the calculator, make sure you are in 'Degree (D) mode'.
Type in
Sine (Sin) followed by '7.5' , then '=' , the answer should be 0.130526192...
or
0.1305 ( 4 d.p.).
Chat with our AI personalities
0.4226182617
t
.105
Find the value of Cos1o.cos2o.cos3o.cos4o......cos179o.Ans: Cos90o=0Therefore, Cos1o.Cos20,Cos30,cos40......Cos900.......Cos1790=0
cos(195) = -0.965925826289