RIGHT TRIANGLE TRIG

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# RIGHT TRIANGLE TRIG - PowerPoint PPT Presentation

RIGHT TRIANGLE TRIG. 4-3. SOHCAHTOA. Sin = opp / hyp Cos = adj / hyp Tan = opp / adj Sec = hyp / adj Csc = hyp / opp Cot = adj / opp. Example. Given the triangle with legs 3 and 4, evaluate all 6 trig functions for . Special trig values. Sin cos tan. Pythagorean identities.

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### RIGHT TRIANGLE TRIG

4-3

SOHCAHTOA
• Sin = opp/hyp
• Csc= hyp/opp
Example
• Given the triangle with legs 3 and 4, evaluate all 6 trig functions for
Remaining identities
• Reciprocal Identities
• Quotient Identites
Example

Use Trig identities to transform one side of the equation into the other:

a) b)

Applying trig identities
• Let be an acute angle such that . Find the values of and .
Example
• A surveyer is standing 50 ft from the base of a large tree. The surveyor measures the angle of elevation to the top of the tree as 71.5. How tall is the tree?
Example
• You are 200 yds from a river. Rather than walking directly to the river, you walk 400 yds along a straight path to the rivers edge. Find the acute angle between this path and the river’s edge.
Homework
• Pg 274#27-39 odd, 57-63 odd