This is the basic and conceptual question from trigonometric ratios on complementary angles in which we have to show that
sin²48° + sin²42° = 1 without using trigonometric tables
RS Aggarwal, Class 10, chapter 12, question no 2(vii).
Share
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
LHS
=sin²48°+sin²42°
=sin²48°+sin²(90−48)°
=sin²48°+cos²48°
=1=RHS