Determine an exact value for:
sin60sec45 - cos240sin300 + csc600
sin60sec45-cos240sin300+ cs600
2010-04-29 10:08 pm
回答 (3)
2010-04-29 10:16 pm
✔ 最佳答案
sin60sec45 - cos240sin300 + csc600=√3/√2 - 2/√3 - √3/4
2010-05-01 3:34 am
2010-04-29 10:53 pm
Determine
an exact value for:Sin60度Sec45度－Cos240度Sin300度+Csc600度
Sol
Sin60度Sec45度－Cos240度Sin300度 +Csc600度
=(√3/2)*√2－(－1/2)*(－√3/2)+(－2/√3)
=√6/2－√3/4－2√3/3
=(6√6－3√3－8√3)/12
=(6√6－11√3)/12
收錄日期: 2021-04-23 20:40:27
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