8 8b Trig Intro

Sine/Cosine/Tangent Focus: Find out who is sohacahtoa and why is the spelling of his name so important?

sohcahtoa ,[object Object],[object Object],[object Object]

Right Triangles’ Sides ,[object Object],[object Object],[object Object],[object Object],[object Object]

Where the hypotenuse is found. hypotenuse 25°

Where the adjacent and opposite sides are found. hypotenuse 25° opposite Adjacent means next to or attached. This will be shown on the next slide.

Where the adjacent and opposite sides are found. hypotenuse 25° Adjacent side to the 25° angle. Adjacent means next to or attached. The next slide will show the relationships from the remaining angle. Opposite the 25° angle.

Where the adjacent and opposite sides are found relative to the third angle.. hypotenuse 65° Adjacent side Adjacent means next to or attached. The hypotenuse is still (always) across from the right angle. Opposite the 65 degree angle.

Ratios ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],9 12 15 Trigonometry is based on the following relationships. x°

Ratios ,[object Object],[object Object],9 12 15 x °

Ratios ,[object Object],[object Object],[object Object],[object Object],9 12 15 x °

Ratios ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],9 12 15 x °

Ratios ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],9 12 15 Trigonometry charts are usually found at the back of math textbooks. Is there one in your book on page 668? x ° We can use these fractions as division statements and compare the resulting answers to determine the angle’s measurement.

What is the missing angle measurement?

8 8b Trig Intro

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8 8b Trig Intro