Question

evaluare sin
$\sin30 + \cos45 + \tan180$
​

Answer 1

Solution:

sin (30) + cos (45) + tan (180)

= (1/2) + (1/√2) + 0

= (1/2) + (1/√2)

= 1/2 + [(1/√2) * (√2/√2)]

= 1/2 * (1 + 2 * (1/√2))


Hope this will be helpful to you.