Question

please solve
I m not able to go till end solution of the question

Answer 1

Answer:

k=6

Step-by-step explanation:

$\\ \sf{:}\dashrightarrow \frac{ \cos(20) }{ \sin(70) } + \frac{2 \cos( \theta) }{ \sin(90 - \theta) } = \frac{k}{2}$$\\ \\ \sf{:}\dashrightarrow \frac{ \cos(20) }{ \sin(90 - 20) } + \frac{2 \cos( \theta) }{ \cos( \theta) } = \frac{k}{2}$

$\\ \\ \sf{:}\dashrightarrow \frac{ \cos(20) }{ \cos(20) } + 2 = \frac{k}{2}$

$\\ \\ \sf{:}\dashrightarrow 1 + 2 = \frac{k}{2}$

$\\ \\ \sf{:}\dashrightarrow 3 = \frac{k}{2}$

$\\ \\ \sf{:}\dashrightarrow k = 2 \times 3$

$\\ \\ \sf{:}\dashrightarrow k = 6$

Answer 2

please make me brilliant