Trigonometri jumlah dan selisih sudut

Trigonometri jumlah dan selisih sudut

11th Grade

10 Qs

quiz-placeholder

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Trigonometri jumlah dan selisih sudut

Trigonometri jumlah dan selisih sudut

Assessment

Quiz

Mathematics

11th Grade

Practice Problem

Medium

Created by

samosir Sangkot

Used 93+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Rumus jumlah cos adalah..

cos (a+b) = cos a + cos b

cos (a+b) = cos a cos b - sin a sin b

cos (a+b) = cos a cos b + cos a cos b

cos (a+b) = sin a cos b + cos a sin b

cos (a+b) = sin a cos b - cos a sin b

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Nilai  cos(α30°)\cos\left(\alpha-30\degree\right)  = ....

 123(sinα+cosα)\frac{1}{2}\sqrt{3}\left(\sin\alpha+\cos\alpha\right)   

  123(cosαsinα)\frac{1}{2}\sqrt{3}\left(\cos\alpha-\sin\alpha\right)  

  12(3cosα+sinα)\frac{1}{2}\left(\sqrt{3}\cos\alpha+\sin\alpha\right)  

 12(cosα3sinα)\frac{1}{2}\left(\cos\alpha-\sqrt{3}\sin\alpha\right)  

  12(cosα+3sinα)\frac{1}{2}\left(\cos\alpha+\sqrt{3}\sin\alpha\right)  

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Nilai dari

 2(sin80°.cos70+cos80°.sin70°)=......2\left(\sin80\degree.\cos70+\cos80\degree.\sin70\degree\right)=......  

 12\frac{1}{2}  

 122\frac{1}{2}\sqrt{2}  

 123\frac{1}{2}\sqrt{3}  

 11  

 32\frac{3}{2}  

4.

MULTIPLE CHOICE QUESTION

3 mins • 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)  

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Nilai dari  tan75°\tan75\degree  adalah...

 2+3-2+\sqrt{3}  

 23-2-\sqrt{3}  

 2+32+\sqrt{3}  

 232-\sqrt{3}  

 3+23+\sqrt{2}  

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Diberikan dua buah sudut A dan B dengan nilai sinus masing-masing adalah  sinA=45\sin A=\frac{4}{5}  dan  sinB=1213\sin B=\frac{12}{13} . Sudut A adalah sudut tumpul sedangkan sudut B adalah sudut lancip. Nilai dari  sin(AB)\sin\left(A-B\right)  adalah...

 5665\frac{56}{65}  

 5665-\frac{56}{65}  

 1665\frac{16}{65}  

 1665-\frac{16}{65}  

 6556\frac{65}{56}  

7.

MULTIPLE CHOICE QUESTION

3 mins • 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}  

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