Question

please help me I don't know how to solve it...!!
I'll thnk u so much and will rate u 5 star
Please solve this☝️ question​

Answer 1

Answer:

√3/2

Step-by-step explanation:

cos30°=√((1+cos(2*30)°)/2)

cos30°=√((1+cos60)/2)

cos30°=√((1+(1/2)/2)

cos30°=√((3/2)/2)

cos30°=√(3/4)

cos30°=√3/2