LECTURE #77 EXERCISE 7.6 (COMPLETE WITH EXAMPLES) UNIT 7 INTRO TO TRIGONOMETRY 10 MATH KPK BOARDS .

LINK OF PLAYLIST OF UNIT 7 INTRODUCTION TO TRIGONOMETRY
   • UNIT 7 CLASS 10 MATH (INTRODUCTION TO...  
LINK OF EXERCISE 7.1 PART #1
DEFINITIONS AND EXAMPLES(LECTURE#69)
   • LECTURE # 69 EXE 7.1 (PART1) DEF, EXA...  
LINK OF EXERCISE 7.1 PART#2
Q1 TO Q4
   • LECTURE#70 EXERCISE 7.1 PART #2 (Q1 T...  
LINK OF PLAYLIST OF ALL UNITS OF CLASS 10 MATH KPK BOARDS
   • CLASS 10 MATH  
LINK OF PHYSICS PRACTICAL PLAYLIST CLASS 10 PHYSICS
   • PHYSICS PRACTICAL CLASS 10  
LINK OF PLAYLIST PHYSICS NUMERICAL CLASS 10
   • NUMERICAL  PHYSICS CLASS 10  
ANGLE OF ELEVATION AND DEPRESSION:
MANY APPLICATIONS OF RIGHT TRIANGLE TRIGONOMETRY INVOLVE THE ANGLE MADE WITH AN IMAGINARY HORIZONTAL LINE AN ANGLE FORMED BY HORIZONTAL LINE IN AND THE LINE OF SIGHT TO AN OBJECT THAT IS ABOVE THE HORIZONTAL LINE IS CALLED THE ANGLE OF ELEVATION. ANGLE FORMED BY A HORIZONTAL LINE AND THE LINE OF SIGHT TWO OBJECT THAT IS BELOW THE HORIZONTAL LINE IS CALLED THE ANGLE OF DEPRESSION .
IN THIS EXERCISE APPLICATIONS OF TRIGONOMETRY ARE GIVEN.
Q1. A BUILDING THAT IS 21 M TALL CAST A SHADOW 25 METRES LONG FIND THE ANGLE OF ELEVATION OF THE SUN TO THE NEAREST DEGREE..
Q2. A LIGHTHOUSE IS 150M ABOVE THE THE SEA LEVEL. ANGLE OF DEPRESSION OF BOAT FROM ITS TOP IS 60 DEGREE. FIND THE DISTANCE BETWEEN THE BOAT AND THE LIGHTHOUSE.
Q3. A TREE IS 50 M HIGH. FIND THE ANGLE OF ELEVATION OF ITS TOP TO A POINT, ON THE GROUND 100 METRE AWAY FROM THE FOOT OF TREE
Q4. FROM THE TOP OF HILL 240 M HIGH MEASURE OF ANGLE OF DEPRESSION OF THE TOP AND BOTTOM OF MINARET ARE 30 DEGREE AND 60 DEGREE RESPECTIVELY FIND THE HEIGHT OF MINARET.
Q5. A POLICE HELICOPTER IS FLYING AT 800 FEET. A STOLEN CAR IS SIGHTED AT AN ANGLE OF DEPRESSION OF 72 DEGREE. FIND THE DISTANCE OF THE STOLEN CAR COMA TO THE NEAREST FOOT ,FROM A POINT DIRECTLY BELOW THE HELICOPTER .
Q6. LIGHT HOUSE IS 300 M ABOVE THE SEA LEVEL THE ANGLE OF DEPRESSION OF TWO BOATS FROM THE TOP OF A LIGHTHOUSE ARE 30 DEGREE AND 45 DEGREE RESPECTIVELY FOR STOP IF THE LINE OF JOINING OF THE BOATS PASSES THROUGH THE FOOT OF LIGHTHOUSE , FIND THE DISTANCE BETWEEN THE TWO BOATS WHEN THEY ARE ON THE OPPOSITE SIDE OF THE LIGHTHOUSE.
Q7. THE ANGLE OF ELEVATION OF THE TOP OF A CLIFF IS 30 DEGREE WALKING TO 10 M FROM THE POINT TOWARDS THE CLIFF THE ANGLE OF ELEVATION BECOMES 45 DEGREE FIND THE HEIGHT OF CLIFF .

#unit7
#mathclass10
#trigonometry
#exercise7.6
#trigonometricidentities
#applicationoftrigonometry
#usesoftrigonometry
#angleofelevation
#angleofdepression
LECTURE #77 EXERCISE 7.6 (COMPLETE WITH EXAMPLES) UNIT 7 INTRODUCTION TO TRIGONOMETRY CLASS 10 MATH KPK BOARDS .