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## Choose the correct option. Justify your choice.(iii) (sec A + tan A) (1 – sin A) = (A) sec A (B) sin A (C) cosec A (D) cos A. Q.4(3)

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How i solve the tricky question no 4(3) of exercise 8.4  .Please solve this question of introduction of  trigonometry of ...Read more

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## Choose the correct option. Justify your choice. (i) 9 sec2A – 9 tan2A = (A) 1 (B) 9 (C) 8 (D) 0 . Q.4(1)

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Give me the best solution of ncert class 10 of introduction of trigonometry .Please solve this optional question of exercise ...Read more

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## Evaluate: (i) (sin263° + sin227°)/(cos217° + cos273°) . Q.3(1)

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Find the easiest way to solve the question of introduction  trigonometry of  ncert class 10. How i solve this exercise ...Read more

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## Write all the other trigonometric ratios of ∠A in terms of sec A. Q.2

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Give me the best solution of ncert class 10 of chapter introduction of trigonometry . How i solve the tricky ...Read more

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## Express the trigonometric ratios sin A, sec A and tan A in terms of cot A. Q.1

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How i solve the introduction of trigonometry of class 10 ncert . Find the best way to solve the trigonometry ...Read more

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## If A, B and C are interior angles of a triangle ABC, then show that sin (B+C/2) = cos A/2. Q.6

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Today i am solving the introduction of  trigonometry of exercise 8.3  and i try to solve but i did not ...Read more

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