Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
The angle of elevation of a jet fighter from a point A on the ground is 600. After a flight of 15 seconds, the angle of elevation changes to 300. If the jet is flying at a speed of 720 km/hr, find the constant height at which the jet is flying.(Use √3 =1.732 (Ans: 2598m)
Ans: 36 km / hr = 10m / sec
720 km / h = 10 x 720/36
Speed = 200 m/s
Distance of jet from
AE = speed x time
= 200 x 15
= 3000 m
tan 60o = AC/BC (opposite side/adjacentside)
√3 = AC/ BC
BC √3 = AC
AC = ED (constant height)
∴ BC √3 = ED ...................1
tan 30o = ED /BC + CD (opposite side/adjacentside)
1/√3 = ED/ BC + 3000
BC + 3000/√3 =ED
BC + 3000/√3 =BC√3 (from equation 1)
BC + 3000 = 3BC
3BC - BC = 3000
2 BC = 3000
BC = 3000/2
BC = 1500 m
ED = BC √3 (from equation 1)
= 1500 √3
= 1500 x 1.732
ED = 2598m
∴ The height of the jet fighter is 2598m.
the segments shown could form a triangle
ALGORITHM FOR DIVISION : If you ask a 10 or 1 1-year-old child to solve, say, 81 + 9, the chances are that she will correctly do it. But if you ask her to solve, say 72 + 3, t
sequencing problem
Can you help me find out how to find the surface area of a prism
Some interpretations of the derivative Example Is f ( x ) = 2 x 3 + 300 +4 increasing, decreasing or not changing at x = -2 ? Solution: We already know that the rate
Decimal representations of some basic angles: As a last quick topic let's note that it will, on occasion, be useful to remember the decimal representations of some basic angles. S
Evaluate the given limits, showing all working: Using first principles (i.e. the method used in Example 1, Washington 2009, Using definition to find derivative ) find the
round 64 to the nearest 10
how to divide an arc in three equal parts
how do you workout the value of the missing angle
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd