Answer: cos60° Step-by-step explanation: Using the cofunction identity cos(90 – x) = sinx , then sin30° = cos(90 – 30)° = cos60° Log in to Reply

Answer:cos60°

Step-by-step explanation:Using the cofunction identity

cos(90 – x) = sinx , then

sin30° = cos(90 – 30)° = cos60°

sin(30)= -0.952…

cos(60) = -0.952…

sin(30) = cos(60)