Question

cos60 Cos 60 degree + cos 30 degree ​

Answer 1

Answer:

cos 60°=1/2

cos 30°=√3/2

therefore,

cos 60° cos°60+ cos 30°

= 1/2 × 1/2 + √3/2

= 1/4+√3/2

= (1+2√3)/4

hope it helps:)

Answer 2

Step-by-step explanation:

cos 60=1÷2

cos 30=/3÷2

1÷2×1÷2 +/3÷2

1÷4+/3÷2

4/3+÷4

=/3