If sin theta = 2/3 and tan theta < 0 what is the value of cos theta?
a) (sqrt5)/2
b) -sqrt5
c) (sqrt5)/3
d) -(sqrt5)/3

d)

Step-by-step explanation:

If   and , then

is in quadrant 2.

Recall that;

We substitute the given sine ratio to obtain;

We are in the second quadrant, therefore

6 hours 48 min

step-by-step explanation:

68÷5=13.6

13.6×30=408min=6 hours 48 min.

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step-by-step explanation: