Trigonometry Application Review

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Presentation transcript:

Trigonometry Application Review Slide Show 1. 24 14 adj x opp Work out the trigonometry steps using a flow map: Tan 24 =x/14 14 * tan 24 x = 6

x 2. 24 25 Sin x = opp 25 2nd sin(24/25) hyp X = 74 6 x 3. Cos 27 = 27 adj X = 7

4. opp 16 x Tan 26 = x 16 adj 16 / tan 26 X = 33 opp 10 5. 10 30 Sin x = hyp 2nd sin (10/30) x 30 X = 19

6. A flag pole of height 26 ft has a shadow of length 15 ft at 7am. Find the angle of elevation of the sun according to the diagram. As it gets closer to lunch time, do you think the angle would get smaller or larger? 26 15 Tanx= 26ft 2nd tan (26/15) 60º xº 15ft

angle gets larger……lets check. As it gets closer to lunch time, the sun rises and the shadow gets smaller. It appears the angle gets larger……lets check. 7am 11am 26ft 26ft 60º 69º 15ft 10ft Tanx=26/10 then x=69º

The plane will meet the ground at and angle of 41º 7. A plane is making an emergency landing. The runway is 150 yards and he has 200 more yards before he hits land. At what angle will he meet the ground? 200 yds hyp x adj 150 yds 150 200 Cosx = 2ndCos = (150/200) The plane will meet the ground at and angle of 41º

RECAP What is the sin ratio? What is the cos ratio? oppostie hypotenuse What is the cos ratio? adjacent hypotenuse What is the tan ratio? opposite adjacent What calculator key do you use when calculating the angle? 2nd If x is on the bottom do you multiply or divide? divide

HOMEWORK Page 773 43-47 all How many things do you see?