Question

2(cos6

θ + sin6

θ) – 3(cos4

θ + sin4

θ) + 1 = 0​

Answer 1

Answer:

We have formulae sin tita + cos tita = 1

Step-by-step explanation:

2(cos 6 + sin 6 )-3(cos 4 + sin 4)+1=0

2(1)-3(1)+1=0

2-3+1=0

-1+1=0

0=0

Hence proved.