Q. 155.0( 1 Vote )


In the figure below, some dimensions of a hut have been marked. Findthe other dimensions (marked ?) of the hut correctly up to one placeof decimal.

Answer :


https://gs-post-images.grdp.co/user_files/63094/15047/images/extra-9_files/Image1110.gif

Solution:

In right angled ΔPQR,

P = 90°

PQR = 20°

sec θ = hypotenuse / adjacent


sec 20° =
QR / PQ


1.0642 =
QR / 3


QR = 1.0642 × 3

= 3.1926


QR = ST = 3.2 units


In right angled Δ ACD,

CAD = 42° 6'


cot 42° 6' =
AD / DC


1.1067 =
AD / 1.5

AD = 1.5 × 1.1067

= 1.66 units

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Trick to learn all Trigonometric Formulae28 mins
Champ Quiz | Trigonometry Important Questions33 mins
Champ Quiz | Trigger on Trigonometry47 mins
Fundas of Trigonometry50 mins
NCERT | Trigonometric Identities52 mins
Basic Concept of Trigonometry43 mins
Champ Quiz | NTSE Trigonometry50 mins
Testing the T- Ratios of Specified Angles57 mins
Foundation | Cracking Previous Year IMO QuestionsFREE Class
NCERT | Imp. Qs. on Trigonometry42 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses