8.7. Trigonometric Ratios with a Calculator http://www.ck12.org
- cos 45◦
- tan 88◦
- sin 43◦
- tan 12◦
- cos 79◦
- sin 82◦
Find the length of the missing sides. Round your answers to the nearest tenth.
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11.- Find sin 80◦and cos 10◦.
- Use your knowledge of where the trigonometric ratios come from to explain your result to the previous
question. - Generalize your result to the previous two questions. If sinθ=x, then cos?=x.
- How are tanθand tan( 90 −θ)related? Explain.