Question

-4sinx(1+2tanx)+2sec²x(5+4cosx). simplify and solve ...​

Answer 1

Step-by-step explanation:

= -4sinx -4sinx.2tanx + 2sec²x.5 + 2sec²x.4cosx

=-4sinx -8(sin²x/cosx) + 10sec²x + 8 secx

=4{2secx -sinx -2 (sin²x/cosx)}