Question

Section A
(1x5=5)
Two equilateral triangles have the sides of lengths 34 and 85 respect
greatest length of tape that can measure the sides of both of them
(b) 17
(0) 51
(d) nor
-
arth
If P(x) = ax+b, then zero of p(x) is -
(c)
(d) -
(a) a
(b) b
The number of real roots of the equation (x-1) + (x-2)2 + (x-3)?
(d)
(b) 1
(a) 2
(c) o
wa hasa​

Answer 1

Answer:

In △ABC AB=AC

⇒∠B=∠C (Angles opposite to equal sides are equal)

Now using angle sum property

∠A+∠B+∠C=180

∘

⇒80

∘

+∠C+∠C=180

∘

⇒2∠C=180

∘

−80

∘

⇒∠C=

2

100

∘

=50

∘

now ∠C+∠x=180

∘

(Angles made on straight line (AC) are supplementary)

⇒50

∘

+∠x=180

∘

⇒∠x=180

∘

−50

∘

=130

∘

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