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Unformatted text preview: 17-2 Numerical Trigonometry
A) Special right triangles trig. review
a. Find CosA, SinA, TanA for both triangles b. c. Every angle has an exact value for Sine/Cosine/Tangent d. Look to page 567 B) Using Trigonometry with calculators (make sure your in degrees) a. SinA = b. CosB = c. TanC = C) Interpolate (look at problem 12 on p. 565) a. is stated as (54 degrees and 30 minutes)
i. We can convert this to decimals by taking ii. Now what is the ratio from the table b. c.
D) Examples 1) 2) 3) 4) 5) 6) E) Word Problem a. A ladder on a fire truck can be extended to a max height of 18m when elevated to its maximum angle of 68 degrees. The base of the ladder is mounted on the truck 3m above the ground. How high above the ground will the ladder reach? ...
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- Spring '09