Question

cos 30 degree ×cos 45 degree+cos 60 degree ×sin 45 degree​

Answer 1

Answer:

As we know

cos 30 = √3/2

cos 45 = 1/√2

cos 60 = 1/2

sin 45 = 1/√2

Now put these values in given condition

√3/2 * 1/√2 + 1/2 * 1/√2

=√3/2√2 + 1/ 2√2

= √3 + 1 / 2√2

Now Rationalize the denominator

√3 + 1/ 2√2 * 2√2 / 2√2

= 2√6 + 2√2/4

Here is your answer ☝️☝️

hope it'll help you