Question

if sec A= 3/5, verify that
4cos³A-3cos A/3 sinA - 4sin³A =1-3 tan²A/3 tan A- tan³A​

Answer 1

Answer:

If sec A= 3/5, verify that 4cos³A-3cos A/3 sinA - 4sin³A =1-3 tan²A/3 tan A- tan³A. Add answer. Log in to add comment .