Answer:
answer 2 is correct
Step-by-step explanation:
This is a riddle in a math test.
What do you call it when 50 people stand on a wooden dock? PIER PRESSURE
Other riddles in this test include:
On what should you watch monster movies? A BIG SCREAM TV
How can you make VARNISH disappear? Take out the "R"
Cos(A-B) = cosAcosB + sinAsinB
<span>
cos(</span>π/2 - θ) = cos(π/2)cosθ + sin(π/2)sinθ
π/2 = 90°
cos(π/2) = cos90° = 0. sin(π/2) = sin90° = 1
cos(π/2 - θ) = cos(π/2)cosθ + sin(π/2)sin<span>θ
</span>
= 0*cosθ + 1*sin<span>θ = </span>sin<span>θ
Therefore </span>cos(π/2 - θ) = sin<span>θ
QED </span>
