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
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(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 ...
(i) (2 tan 30°)/(1 + tan² 30°) = (A) sin 60° (B) cos 60° (C) tan 60° (D) sin 30° (ii) (1 – tan² 45°)/(1 + tan² 45°) = (A) tan 90° (B) 1 (C) sin 45° (D) 0 (iii) sin 2A ...