If cos0=-3/5 in quadrant II, what is sin0

if and is in the second quadrant.

Step-by-step explanation:

By the Pythagorean Trigonometric Identity:

for all real values.

In this question:

.

Therefore:

.

Note, that depending on , the sign can either be positive or negative. The sine of any angles above the axis should be positive. That region includes the first quadrant, the positive -axis, and the second quadrant.

According to this question, the here is in the second quadrant of the cartesian plane, which is indeed above the -axis. As a result, the sine of this

It was already found (using the Pythagorean Trigonometric Identity) that:

.

Take the positive square root of both sides to find the value of :

.

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angle efh= angle egh