Question

A =45°,B=30°then SHOW THAT sin A/cosA+sinA.sinB​

Answer 1

Step-by-step explanation:

If A = 45°

B = 30°

then ,

$\frac{ \sin \: a}{ \cos \: a} + \sin \: a \times \sin \: b \: \\ \frac{ \sin(45) }{ \cos(45) } + \sin(45) \times \cos(30) \\ \frac{ \frac{1}{ \sqrt{2} } }{ \frac{1}{ \sqrt{2} } } + \frac{1}{ \sqrt{2} } \times \frac{ \sqrt{3} }{2} \\ 1 + \frac{ \sqrt{3} }{2 \sqrt{2} } \\ \frac{2 \sqrt{2} + \sqrt{3} }{2 \sqrt{2} }$

Answer 2

The answer is provided in the photo with step-by-step explanation.