surely you can evaluate the functions at t=0:
1a)y=250(1+0.2)^t at t=0: 250(1.02)^0 = 250
2b) y=9.8(1.35)^t at t=0: 9.8(1.35)^0 = 9.8
For the special triangles, consult your text. These come up very often, so learn them and love them! Just do it. It will save you a lot of time later. Just learn the sin, cos, tan. And recall that the other three functions are their reciprocals.
#3. What, you can't use your calculator?
35 degrees 21 minutes 45 seconds = 35 + 21/60 + 45/3600 = 2829/80°
tan 2829/80° = 0.7096
so, cot = 1/tan = 1.4091
1) Identify the initial amount and the growth rate of the following
1a)y=250(1+0.2)^t
2b) y=9.8(1.35)^t
2) Use special right triangles to state the value of the 6 trig functions for 30 degrees, 45 degrees and 60 degrees.
3) Use the calculator to evaluate the value of the following trig function.
cot 35 degrees 21 minutes 45 seconds
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