find :sin alpha sin 3 alpha + sin 3 alpha sin 7 alpha + sin 5 alpha sin 15 - Maths - Inverse Trigonometric Functions

Question

find :sin alpha sin 3 alpha + sin 3 alpha sin 7 alpha + sin 5 alpha
sin 15 alpha/sin alpha cos 3 alpha+sin 3 alpha cos 7 alpha + sin 5
alpha cos 15 alpha

Anup Raj · Accepted Answer

find :sin alpha. sin 3 alpha + sin 3 alpha.sin 7 alpha + sin 5 alpha.sin 15 alpha/sin alpha .cos 3 alpha+sin 3 alpha . cos 7 alpha + sin 5 alpha . cos 15 alpha