Question

I want to all formula of trigonometric.

Answer 1

HOPE IT'S HELPFULLY ^_^ ^_^

Answer 2

sin^2a + cos^2a=1 sin square A + cos square B equal 1 2. 1+tan^2A =sec^2A 3. 1+ cot^2A= cosec^2A 4.sin(A+B) = sin a cos b + cos a sin b 5.sin(a - b) = sin a cos b - cos a sin b 6. cos(a+b) =cos a cos b - sin a sin b 7. cos(a-b) =cos a cos b + sin a sin b 8. tan(a+b) = tan A + tanb/1-tan a tan b 9. tan(a-b) =tan a - tan b/ 1+tan a tan b 10. cot(a+b) = cot a cot b - 1/cot b + cot a 11. cot(a-b) = cot a cot b + 1/cot b- cot a