Plove that
6(cos10A+sin10A) -15 ( cos68A+Sin8A ) +
10 (Cos6A+sin6A) =1
Answers
Answered by
0
Answer:
Qanda app.......
open answer....
okay...
mark to brainly please....
Answered by
0
Step-by-step explanation:
6(cos10A+sin10A) -15 ( cos68A+Sin8A ) + 10 (Cos6A+sin6A) =1
6(1)-15(1)+10(1)=1 [sina+cosa=1]
6-15+10=1
1=1
hence proved
Similar questions