Chapter 12 Trigonometry Triangle

# B b c csc a sec b a 0 sin cos90 0 cos sin90

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Unformatted text preview: #1- 19 odd, 24- 45 m of 3 12.2 Functions of Acute Angles •  The six trig functions of θ are defined as: sin θ : y r csc θ : r y x r cos θ : sec θ : y xan t x yot θ c r x r y θ x θ: : θ 1) in standard posi5on has terminal ray thru θ θ θ (2,4), ﬁnd: sin cos tan 2) Find all 6 trig fns given the terminal ray thru 5 5 (3,4) β 13 13 β 3) If is an acute angle and sin = ﬁnd: cos and tan of 4) Find all 6 trig fns given r = 15 and x = 9 sin & cos are called cofunc5ons tan & cot are called cofunc5ons sec & csc are called cofunc5ons a sin A = B c a C b A = cos B c b cos A = = sin B c a tan A = = cot B b b cot A = = tan B a c sec A = = csc B b c csc A = = sec B a 0 sin θ = cos(90 − θ ) 0 cosθ = sin(90 − θ ) tan θ = cot(90 0 − θ ) 0 cot θ = tan(90 − θ ) secθ = csc(90 0 − θ ) 0 0 cscθ = sec(90 − θ ) θ Find acute angle theta if cot = tan 20 0 Together p558 Oral #2...
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## This note was uploaded on 05/24/2013 for the course MATH Honors Alg taught by Professor Rose,susan during the Fall '12 term at Manalapan High.

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