Question

cos 45º cos 30° + sin 45º sin 30°​

Answer 1

Answer:

heya mate there's your answer

we know that ,

cosA cosB +sinA sinB = cos(A-B)

so,

=cos45° cos30° + sin45° sin30°

=cos(45°-30°)

=cos15°

=root3 +1/2root2

hope it helps you

Thank you