Home
Class 11
MATHS
In Delta ABC, if cos A cos B+ sin A sin ...

In `Delta ABC, if cos A cos B+ sin A sin B sin C=1`, then the triangle is

A

equilateral

B

right angled

C

Isosceles

D

Right angled isosceles

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise PRACTICE EXERCISE|132 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise LECTURE SHEET EXERCISE - I ( Straight Objective Type Questions ) |58 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise EXERCISE - 1|98 Videos

  • PLANES

    AAKASH SERIES|Exercise ADVANCED SUBJECTIVE TYPE QUESTIONS|30 Videos

  • PROPERTIES OF VECTORS

    AAKASH SERIES|Exercise PRACTICE EXERCISES|55 Videos

Similar Questions

Explore conceptually related problems

In Delta ABC, if cos A cos B+ sin A sin B sin C=1 , then a:b:c =

If Delta ABC if cos A cos B + sin A sin B sin C = 1 and C = pi/2 , then A : B =

In DeltaABC, " if " cos A=( sin B)/( 2 sin C) , then the triangle is

In Delta ABC, if sin^2 A+sin^2 B+sin^2 C =9//4 , then the triangle is

In a triangle ABC . If cos Acos B + sin A sin B sin C = 1 , then sin A + sin B+ sin C =

In Delta ABC, sin A: sin B: sin C is

In Delta ABC , sum a (sin B - sin C)

In Delta ABC, if sin A cos B=1//4 and 3 tan A=tan B , the triangle is right angled at

In Delta ABC, if (sin A+sin B+sin C) (sin A+ sin B- sin C)=3 sin A sin B , then