How much is the math problem sin 10? What I want is that the calculation process is not worked out by a computer. Thank you!

Using the triple angle formula sin3θ= 3sinθ? 4(sinθ)^3

sin30= 3sin 10？ 4(sin 10)^3

It is difficult to solve cubic equation directly. You can use the step-by-step method, but I don't know if you have learned it.

Change the angle into radians first.

Sin( 10 degree) = sin (10 * 3.1416/180) = sin (0.17453).

Taylor formula (take the first three items)

=0. 17453-0. 17453^3/3! +0. 17453^5/5!

=0. 17453-0.000886+0.00000003748

Keep 4 digits

=0. 1736