Question

Please answer it is urgent plz someone good hearted help ​

Answer 1

Step-by-step explanation:

cos60×cos30+sin60×sin30=1

its value is 1

Answer 2

Answer:

cos 60 = 1/2

cos 30 = √3/2

sin 60 =√3/ 2

sin 30 = 1/2

Step-by-step explanation:

1/2 × √3/2 + √3/2 × 1/2

= 0.8