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8. Introduction to Trigonometry
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Q14 of 58 Page 8

Prove that 1+

Proof:

L.H.S:











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12

Prove that = 2 cosec A

13

If sec A = 5/4, verify that .

15

Show that =1

16

In a rectangle ABCD, AB = 20 cm, = 60o, calculate side BC and diagonals AC and BD.

Questions · 58
8. Introduction to Trigonometry
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