Quiz about тригонометрия

Question 1

$$\sin30\degree=$$

Accepted Answer

$$\frac{1}{2}$$

Answer

$$\frac{\sqrt[]{3}}{2}$$

Answer

$$-\frac{1}{2}$$

Answer

$$0$$

Question 2

$$\cos\left(-60\degree\right)=$$

Accepted Answer

$$\frac{1}{2}$$

Answer

$$-\frac{1}{2}$$

Answer

$$\frac{\sqrt[]{3}}{2}$$

Answer

$$-\frac{\sqrt[]{3}}{2}$$

Question 3

$$Ықшамдаңыз:\ 1-\sin^2a$$

Accepted Answer

$$\cos^2a$$

Answer

$$-\cos^2a$$

Answer

$$\cos a$$

Answer

$$tga$$

Question 4

$$Негізгі\ тригонометриялық\ тепе-теңдікті\ көрсетіңіз:$$

Accepted Answer

$$tga=\frac{\sin a}{\cos a}$$

Answer

$$\sin^2a+\cos^2a=-1$$

Answer

$$\operatorname{ctg}a=\frac{\sin a}{\cos a}$$

Answer

$$tga\cdot\operatorname{ctg}2a=1$$

Question 5

$$\sin390\degree\ =$$

Accepted Answer

$$\frac{1}{2}$$

Answer

$$0$$

Answer

$$-1$$

Answer

$$\frac{\sqrt[]{3}}{2}$$

Question 6

$$Тригонометриялық\ тепе-теңдікті\ аяқтаңыз:\ \operatorname{ctg}a=...$$

Accepted Answer

$$\frac{1}{tga}$$

Answer

$$\frac{\sin a}{\cos a}$$

Answer

$$1$$

Answer

$$tga$$

Question 7

$$tga\ мына\ аралықтағы\ таңбасы:\ 180\degree

Accepted Answer

$$оң$$

Answer

$$теріс$$

Answer

$$оң\ және\ теріс$$

Answer

$$дұрыс\ жауабы\ жоқ$$

Question 8

$$\sin^2135\degree+\cos^2135\degree=$$

Accepted Answer

$$1$$

Answer

$$-1$$

Answer

$$\frac{\sqrt[]{2}}{2}$$

Answer

$$\frac{1}{2}$$

Question 9

$$Тригонометриялық\ тепе-теңдікті\ толықтырыңыз:\ 1+tg^2a=...$$

Accepted Answer

$$\frac{1}{\cos^2a}$$

Answer

$$\frac{1}{\sin^2a}$$

Answer

$$1$$

Answer

$$\frac{\sin a}{\cos a}$$

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