Evaluate the expression.
-$\sin ^ { 2 } 270 ^ { \circ } + \cos ^ { 2 } 270 ^ { \circ }$
A) 1
B) $\sqrt { 3 }$
C) $\sqrt { 2 }$
D) 2

Name: Evaluate the expression. -$\sin ^ { 2 } 270 ^ { \circ } + \cos ^ { 2 } 270 ^ { \circ }$ A) 1 B) $\sqrt { 3 }$ C) $\sqrt { 2 }$ D) 2
Brand: Quizplus
Rating: 4.9 (31 reviews)

Question

Quizplus · Accepted Answer

The expression is an instance of the Pythagorean trigonometric identity $\sin^2 \theta + \cos^2 \theta = 1$, which holds for any angle $\theta$, including $270^\circ$.

Evaluate the Expression sin⁡2270∘+cos⁡2270∘\sin ^ { 2 } 270 ^ { \circ } + \cos ^ { 2 } 270 ^ { \circ }sin2270∘+cos2270∘

Evaluate the Expression $\sin ^ { 2 } 270 ^ { \circ } + \cos ^ { 2 } 270 ^ { \circ }$