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Cos/1-sin=1+sin/cos |
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Answer» Answer: ASK Find an Online Tutor Now TRIGONOMETRIC FORMULAS TRIGONOMETRIC IDENTITIES Hannah C. asked • 12/03/14 I thought it could possible be solved by a double angle formula, but I cant seem to make it work Follow4 Add comment More 3 ANSWERS By Expert Tutors By: Jacob K. answered • 12/03/14 TUTOR New to Wyzant Knowledgeable and patient MBA and Civil Engineering graduate SEE TUTORS LIKE THIS cos (1+sin) (1+sin) + cos
= cos2 + (1+sin)2 cos*(1+sin)
= cos2 + 1 + 2sin + sin2 cos*(1+sin)
we know that cos2 + sin2 = 1
= (1+1+2sin) cos*(1+sin)
= (2+2sin) cos*(1+sin)
= 2(1+sin) cos*(1+sin)
= 2 cos
= 2sec Step-by-step explanation: plz make this question brainlist fast only 1 brainlist question left |
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