sin45 × sin30 + cos 45 × cos 30= ?
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Answered by
2
sin(45) = cos(45) = 1/√2
sin(30)=1/2
cos(30)=√3/2
so you get:
1/(2√2) + √3/(2√2)
it should be (1+√3)(1/2√2)
Someone1:
the anwer behind the book is root 3 +1 / 2root2
i am not able to get this answer. :(
yes that is correct i made one mistake i edited yhe answer
thanks.
no problem
Answered by
2
⇒(1/√2 * 1/2) + (1/√2 * √3/2)
⇒(1+√3)/2√2
⇒√2(1+√3)/4
⇒(1+√3)/2√2
⇒√2(1+√3)/4
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