Question

The value of cos 75⁰
​

Answer 1

cos(75°) = cos(45°+ 30°)

=cos 45°+cos 30° – sin 45°×sin 30°

=(for final answer see attachment)

Hope this helps you

Please mark as brainliest

Answer 2

Answer:

cos(75*) = cos(45* +30*)

cos 45* cos 30* - sin 45* sin 30*

√3/2/√2 - 1/√2

√3- 1 /2√2