Question

the value of cos 0°+sin 90°+√2sin45° is. (. )
a)5. b)4.
c)3. d)1.
solve and give the answer plz

Answer 1

cos0° + sin90° + √2sin45°

cos0° =1
sin90° =1
sin45° =1/√2

1 + 1 + √2 × 1/√2

=1 + 1 + 1 = 3

so , option (c) is correct

Answer 2

Cos0=1
Sin90=1
Sin45=1/root2
Therefore
1+1+root2*1/root 2
Therefore
1+1+1=3