Question

In triangle pqr if angle p+angle r=105 and angle r +angle q=135 then find the value of angle r

Answer 1

Given that
$p + r = 105$
But we know that
$p + q + r = 180$
Thus, we can solve for q
$q = 180 - 105 = 75$
And given that
$q + r = 135 \\ 75 + r = 135 \\ r = 60 \\ p = 45$

Answer 2

Answer:

this see examples to understand questions exercise 6.3 question 3