properties of triangle

Question

The legs of a tripod are each 10cm in length,and their points of contact with a horizontal table on which the tripod stands from a triangle whose sides are 7,8 and 9cm. in length.Find the inclination of the legs to the horizontal,and the height of the apex.

SAGAR SINGH - IIT DELHI · Accepted Answer

Dear student, Its a very simple question. You just have to use cosine and sine formula. If ABC is a triangle with sides a = BC, b = CA, c = AB, then prove that In figure (i), A o But from D BAE, we have In figure (ii), A > 90o But from D BAE, we have In figure(iii), From (i), (ii) and (iii), we conclude that Similarly, b2 = c2 + a2 - 2 ca cos B Please feel free to ask your queries here. We are all IITians and here to help you in your IIT JEE preparation. All the best. Win exciting gifts by answering the questions on Discussion Forum. So help discuss any query on askiitians forum and become an Elite Expert League askiitian. Now you score 5+15 POINTS by uploading your Pic and Downloading the Askiitians Toolbar respectively : Click here to download the toolbar.. Askiitians Expert Sagar Singh B.Tech, IIT Delhi

Trigonometry> properties of triangle...

The legs of a tripod are each 10cm in length,and their points of contact with a horizontal table on which the tripod stands from a triangle whose sides are 7,8 and 9cm. in length.Find the inclination of the legs to the horizontal,and the height of the apex.

Debanjan Sarkar , 14 Years ago

SAGAR SINGH - IIT DELHI

Provide a better Answer & Earn Cool Goodies

LIVE ONLINE CLASSES

Ask a Doubt

In ABC, if cot A+cot B+cot C = cosecA cosecB cosecC, then prove that ABC is right angle triangle.

trigonometry

Find the general solution of equation tan3∂=cot2∂
For all angles between -720 and +720

trigonometry

To prove : Cosec(45 degree - A)Cosec(45 degree + A) = 2SecA

trigonometry

cos^2 13ºcos^2 47º+cos^2 73º =? …..................

trigonometry

Derive a formula for the area of the triangle, given b, A, B, and C. That is, derive the formula: (b^2sinAsinC)/(2sinB)

trigonometry

Trigonometry> properties of triangle...

The legs of a tripod are each 10cm in length,and their points of contact with a horizontal table on which the tripod stands from a triangle whose sides are 7,8 and 9cm. in length.Find the inclination of the legs to the horizontal,and the height of the apex.

Debanjan Sarkar , 14 Years ago

SAGAR SINGH - IIT DELHI

Provide a better Answer & Earn Cool Goodies

LIVE ONLINE CLASSES

Ask a Doubt

Other Related Questions on trigonometry

In ABC, if cot A+cot B+cot C = cosecA cosecB cosecC, then prove that ABC is right angle triangle.

trigonometry

Find the general solution of equation tan3∂=cot2∂For all angles between -720 and +720

trigonometry

To prove : Cosec(45 degree - A)Cosec(45 degree + A) = 2SecA

trigonometry

cos^2 13ºcos^2 47º+cos^2 73º =? …..................

trigonometry

Derive a formula for the area of the triangle, given b, A, B, and C. That is, derive the formula: (b^2sinAsinC)/(2sinB)

trigonometry

Find the general solution of equation tan3∂=cot2∂
For all angles between -720 and +720