Question

in a right angle triangle it is given that a is an acute angle and that tan a equals to 3 by 4 without using tables find the value of Cos A​

Answer 1

Answer:

Step-by-step explanation:

Bhai jis side angle me theta ka value diya rhta hai use hi sin/ cos maante hn

ye hmesha acute angle hota hai

Or ye hmesha hypotenuse or base ke beech me hota h

Answer 2

Given: angle A is acute.

Also, tanA=(3/4)

Or, tanA=0.75

Or,A=(tan)^-1(0.75)

Or, A=36.869°

Now Cos A= Cos(36.869)

=0.8