Question

sin(a)-2sin³(a)/2cos³(a)-cos(a)=tan(a)​

Answer 1

sin(a)-2sin³(a)/2cos³(a)-cos(a)=tan(a)

here is the ans ....

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Answer 2

Answer:

Step-by-step explanation:

sin(a)-2sin³(a)

2cos³(a)-cos(a)

=sin a(1-2sin²(a)

cos a(2cos²(a)-1)

=sin a(1-2sin²a)

cos a(2(1-sin²a)-1

=sin a(1-2sin²a)

cos a(2-2sin²a-1)

=sin a(1-2sin²a)      =  tan a

cos a(1-2sin²a)

∴LHS=RHS