prove that :Cos^3 20+sin^3 10=3/4(cos20+sin10) please solve
Answers
Answered by
4
as a³+b³=(a+b)(a²+b²-ab)
so cos³20+sin³10=(cos20+sin10)(cos²20+sin²10-cos20sin10)
solve further to get answer
so cos³20+sin³10=(cos20+sin10)(cos²20+sin²10-cos20sin10)
solve further to get answer
AmiteshSinha:
pls solvee
all
pahle banadijiye use k bad pic vejdijiye
OK I WILL SOLVE IN EVENING DEAR
thank u
Similar questions