Use the figure shown to determine which trigonometric ratio is incorrect?

a. sin 30°= 4/8
b. cos 60°=4/8
c. sin 60°= square root of 48 over 8
d. tan 30°= square root of 48 over 8

Option d is incorrect.

Step-by-step explanation:

See the diagram attached.

a. . Hence, this is correct.

Here, sin Ф is given by perpendicular divided by the hypotenuse.

b. . Hence, this is also correct.

Here, cos Ф is given by base divided by the hypotenuse.

c. . Hence, this is also correct.

d. . Hence this is not correct.

Here, tan Ф is given by perpendicular divided by base.

Therefore, option d is incorrect. (Answer)

step-by-step explanation:

most likely the answer is a.

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other answer is correct. i had used the radius of the radius somehow. a website: