Day 85: CDS Maths

5 questions. Try each one first, then open its answer.

Question 1
Mensuration 2D. This type asked 2 times: CDS 1 2018, CDS 2 2018. This one: CDS 2 2018 See all 2 of this type
90 $The area of the region bounded externally by a square of side 2a cm and internally by the circle touching the four sides of the square is$
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Question 2
Circles. This type asked 2 times: CDS 2 2016, CDS 1 2018. This one: CDS 1 2018 See all 2 of this type
76 $The locus of the mid-points of the radii of length 16 cm of a circle is$
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Question 3
Polynomials. This type asked 2 times: CDS 2 2017, CDS 1 2018. This one: CDS 1 2018 See all 2 of this type
17 $f(x)$
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Question 4
Triangles. This type asked 2 times: CDS 1 2017, CDS 1 2018. This one: CDS 1 2018 See all 2 of this type
80 $Consider the following statements : Two triangles are said to be congruent, if 1. Three angles of one triangle are equal to the corresponding three angles of the other triangle. 2. Three sides of one triangle are equal to the corresponding three sides of the other triangle, 3. Two sides and the included angle of one triangle are equal to the corresponding two sides and the included angle of the other triangle. 4. Two angles and the included side of one triangle are equal to the corresponding two angles and the included side of the other triangle. Which of the above statements are correct ?$
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Question 5
Trigonometric Ratios and Identities. This type asked 2 times: CDS 1 2017, CDS 1 2018. This one: CDS 1 2018 See all 2 of this type
54 $\sin^4 \theta - \cos^4 \theta$
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Question 1

Question 2

Question 3

Question 4

Question 5