Simplify the expression using trigonometric identities: sec (–θ) – cos θ. A) tan(–θ) · sin (–θ)
B) tan(–θ) · sin θ
C) –tan θ · sin θ
D) tan θ · sin θ

How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c = f