Question

4) Cos 45° +Sin 30°​

Answer 1

$\cos \left(45^{\circ \:}\right)+\sin \left(30^{\circ \:}\right)$

$=\frac{\sqrt{2}}{2}+\frac{1}{2}$

$=\frac{\sqrt{2}+1}{2}$

Answer 2

Answer:

cos 45°= 1/√2

sin 30°= 1/2

therefore;

cos 45°+sin30°= 1/√2+1/2= -0.46