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| 1. |
sin(A - B) = sinAcosB - cosAsinB , cos(A - B) = cosAcosB + sinAsinB , find the values of sin15 and cos15. |
| Answer» sin(A - B) = sinAcosB - cosAsinB , cos(A - B) = cosAcosB + sinAsinB , find the values of sin15 and cos15. | |