Sunday 23 June 2019
TRIGONOMETRICAL IDENTITIES - PART - 22
43. (1 / (sin A – cos A) / (1 /(sin A + cos A) = 2cos A / (2sin
2
– 1)
44. (1 / (cos A + sin A) / (1 / (cos A – sin A) = 2cos A / (2cos
2
– 1)
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