Question

que no.4 don't spam....i will report ur all ans.........​

Answer 1

Step-by-step explanation:

hope it helps you......

Answer 2

Answer:

4/5

There are many ways to do it.

One of it is to draw a right angle triangle

take an angle as thetta.

then opposite side will be 3 and hypotenuse will be 5

using pythagoras theorem we will get adjacent side as 4....

$5 {}^{2} = x {}^{2} + 3 {}^{2} \\ x {}^{2} = 25 - 9 = 16 \\ x = 4$

COS THETTA =ADJACENT SIDE/HYPOTENNUSE

SO 4/5