You could use your calculator to find out what angle has a sine of 0.5, but you
might just know that it’s 30°. This is a 30-60-90 triangle, and is the longer
leg, which is equal to the length of the shorter leg times Since AC = 1, then
You could use your calculator to find the square root of 3, but you
might know that it’s about 1.73. The answer is (D).
DON’T USE YOUR CALCULATOR TOO EARLY
When you do use your calculator, it will usually be at a later stage in solving a
problem. Never start punching calculator keys before you’ve given the
problem a little thought. Know what you’re doing and where you’re going.
DON’T GET PUNCHY
Don’t start punching calculator keys until you’ve given the problem
some thought.2. In Figure 1, if sin θ = 0.5, what is the length of ?(A) 1.25
(B) 1.41
(C) 1.50
(D) 1.73
(E) 2.00