Question

cos 30° sin 60° + cos 60° sin 30°=
(a)1
(b)2
(c)3
(d)4​

Answer 1

$\huge\tt\colorbox{lightblue}{Solution}$

$cos30 \times sin60 + cos60 \times sin30 \\ \\ \frac{ \sqrt{3} }{2} \times \frac{ \sqrt{3} }{2} + \frac{1}{2} \times \frac{1}{2} \\ \\ \frac{ { (\sqrt{3}) }^{2} }{4} + \frac{1}{4} \\ \\ \frac{3}{4} + \frac{1}{4} \\ \\ \frac{3 + 1}{4} \\ \\ \frac{4}{4} \\ \\ 1$

Option a) 1 is correct ✔️

Answer 2

Answer:

cos 30° sin 60° + cos 60° sin 30°=

(a)1

(b)2

(c)3

(d)4

Step-by-step explanation:

cos 30° sin 60° + cos 60° sin 30°=

$\sqrt{3} \2 \times \sqrt{3} \2 + 1 \2 \times 1 \2 \\ \\ 3 \4 + 1 \4 \\ \\ 4 \4 = 1$

(a)1