化简求值:8sin15°cos15°cos30°cos60°

问题描述:

化简求值:8sin15°cos15°cos30°cos60°

8sin15°cos15°cos30°cos60°
=4(2sin15°cos15°)cos30°cos60°
=4sin30°cos30°cos60°
= 4(1/2)(√3/2)(1/2)
=√3/2