Question

sin²15°+sin²20+sin²25°+....+sin²75 = 13/2
I know the method to solve the question. But is there any shortcut technique/formulas to solve this question? ​

Answer 1

Answer:

ig no

Step-by-step explanation:

if u solve using the normal method only u will get the proper Marks.

so dont use short cuts show all the steps in the paper that will help