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rumus cos jumlah dan selisih dua sudut

Authored by Hemianggi Mawaddah

Mathematics

11th Grade

Used 2+ times

rumus cos jumlah dan selisih dua sudut
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Nilai dari  cos15°\cos15\degree  adalah ...

 14(62)\frac{1}{4}\left(\sqrt{6}-\sqrt{2}\right)  

 14(2+6)\frac{1}{4}\left(\sqrt{2}+\sqrt{6}\right)  

 14(26)\frac{1}{4}\left(-\sqrt{2}-\sqrt{6}\right)  

 12(2+6)\frac{1}{2}\left(\sqrt{2}+\sqrt{6}\right)  

 12(62)\frac{1}{2}\left(\sqrt{6}-\sqrt{2}\right)  

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Nilai dari  cos165°\cos165\degree  adalah....

 2+64-\frac{\sqrt{2}+\sqrt{6}}{4}  

 264-\frac{\sqrt{2}-\sqrt{6}}{4}  

 2+64\frac{\sqrt{2}+\sqrt{6}}{4}  

 364\frac{\sqrt{3}-\sqrt{6}}{4}  

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Jika  tanα=724 \tan\alpha=\frac{7}{24}\   dan  tanβ=43\tan\beta=\frac{4}{3}   dengan  α\alpha  dan  β\beta  sudut lancip, hasil dari  cos(α+β)=....\cos\left(\alpha+\beta\right)=....  

 44125\frac{44}{125}  

 75125\frac{75}{125}  

 96125\frac{96}{125}  

 115125\frac{115}{125}  

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 cos105°+cos15°=...\cos105\degree+\cos15\degree=...  

 12\frac{1}{2}  

 2\sqrt{2}  

1

 122\frac{1}{2}\sqrt{2}  

 122-\frac{1}{2}\sqrt{2}  

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 Nilai cos 75° adalah...Nilai\ \cos\ 75\degree\ adalah...  

 14(62)\frac{1}{4}\left(\sqrt{6}-\sqrt{2}\right)  

 14(6+2)\frac{1}{4}\left(\sqrt{6}+\sqrt{2}\right)  

 14(6+2)-\frac{1}{4}\left(\sqrt{6}+\sqrt{2}\right)  

 14(26)\frac{1}{4}\left(\sqrt{2}-\sqrt{6}\right)  

6.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

 cos 85°cos 55° + sin 85°sin 55 = ...\cos\ 85\degree\cos\ 55\degree\ +\ \sin\ 85\degree\sin\ 55\ =\ ...  

 sin 30°\sin\ 30\degree  

 cos 30°\cos\ 30\degree  

 123\frac{1}{2}\sqrt{3}  

 12\frac{1}{2}  

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

cos (a+ b) =

sin a cos b + cos a sin b

sin a cos b - cos a sin b

cos a cos b - sin a sin b

cos a cos b + sin a sin b

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