Question

5 Evalant
>
cas 30° x cos 60° + sin 30° x sin60°​

Answer 1

Answer:

√3/2 is the answer

Step-by-step explanation:

cos 30° x cos 60° + sin 30° x sin60°​

= √3/2 x 1/2  + 1/2 x √3/2

√3/4 + √3/4

(√3 + √3)/4

(2√3)/4

= √3/2

Answer 2

Answer:

Step-by-step explanation:

= √3/2 × √3/2 + 1/2 × 1/2

3/4 + 1/4

3+1/ 4

=4/4

i,e = ( 1 )