Determine the sign (positive or negative) of the given value without use of a calculator.
-$\tan 151 ^ { \circ }$
A) Negative
B) Positive

Question

Quizplus · Accepted Answer

The tangent function is positive in the first and third quadrants of the unit circle. Since 151° lies in the second quadrant, where the sine and cosine values have opposite signs (sine is positive and cosine is negative), the tangent (sine/cosine) will be negative.

Determine the Sign (Positive or Negative) of the Given Value tan⁡151∘\tan 151 ^ { \circ }tan151∘

Determine the Sign (Positive or Negative) of the Given Value $\tan 151 ^ { \circ }$