Question

sin15*cos15 ( degrees)

Answer 1

We have still not learnnt the half angle formulae so how to do it without that

Answer 2

Do you know double angle?

Answer 3

And the double angle formulas? Let\[k = \sin(15)\cos(15)\]But\[2k =2\sin(15)\cos(15) = \sin(30) = \dfrac{1}{2}\]\[\Rightarrow k = \dfrac{1}{4}\]

Answer 4

i know all of them actually but is there a way to solve it without them becoz in school we havent learnt them

Answer 5

Do you know trig?

Answer 6

And geometry?

Answer 7

are u kidding @primeralph

Answer 8

I can't read your mind.