If radii of the two concentric circles with centre O are 7 cm and 14 cm respectively and ∠ AOC = 40°. NCERT Class 10 Chapter 12 AREAS RELATED TO CIRCLES Page No. 235 Exercise 12.3 Question No. 2
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The diameter of the region representing Gold score is 21 cm and each of the other bands is 10.5 cm wide. Find the area of each of the five scoring regions. NCERT Class 10 Chapter 12 AREAS RELATED TO CIRCLES
(i) (cosec θ – cot θ)² = (1-cos θ)/(1 + cos θ) (ii) (cos A)/(1 + sin A) + (1 + sin A)/(cos A) = 2 sec A (iii) (tan θ)/(1 – cot θ) + (cot θ)/(1 – tan θ) ...
(i) (sin 18°)/(cos 72°) (ii) (tan 26°)/(cot 64°) (iii) cot 48° – sin 42° (iv) cosec 31° – sec 59° NCERT Class 10 Chapter 8 Introduction to trigonometry Page No. 189 Exercise 8.3 Question No. 1
(i) sin (A + B) = sin A + sin B. (ii) The value of sin θ increases as θ increases. (iii) The value of cos θ increases as θ increases. (iv) sin θ = cos θ for all values ...