The functions sine, cosine and tangent of an angle are sometimes referred to as the primary or basic trigonometric functions. The remaining trigonometric functions secant (sec), cosecant …

Here are a few examples I have prepared: a) Simplify: tanx cscx ×secx Apply the quotient identity tanθ = sinθ cosθ and the reciprocal identities cscθ = 1 sinθ and secθ = 1 cosθ. = sinx cosx 1 …

2015年9月22日 · Use the fact that tan (x) = sin (x)/cos (x) tanxcons = sinx/cosx *cosx/1 = sinx

2018年4月8日 · 1.) tan x = (sinx cos x) 2.) plug it in: (sinx cos x) + cosx 1 +sinx 3.) both sides must have a common denominator so: (sinx)(1 + sinx) (cosx)(1 +sinx) + (cosx)(cosx) (cosx)(1 …

2018年3月28日 · To prove the identity, you'll need these four, more basic identities: cscx=1/sinx cotx=cosx/sinx tanx=sinx/cosx sin^2x+cos^2x=1 To start the proof, use these identities to write …

2018年3月4日 · We have: LH S = cosx + sinxtanx and RH S = secx We change the LH S: cosx + sinx ⋅ sinx cosx = cosx + sin2x cosx = sin2x +cos2x cosx = 1 cosx = secx So LH S = RH S …

2018年6月2日 · tanx secx −cosx =? tanx = sinx cosx; secx = 1 cosx tanx secx −cosx = sinx cosx 1 cosx −cosx Multiplying numerator and denominator by cosx = sinx 1 − cos2x 1 ...

2016年3月26日 · sin (x)tan (x)+cos (x)=sec (x) sin (x)tan (x)+cos (x) = sin (x)sin (x)/cos (x)+cos (x) =sin^2 (x)/cos (x)+cos (x) =sin^2 (x)/cos (x)+cos^2 (x)/cos (x) = (sin^2 (x ...

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2018年4月10日 · I'm assuming you want us to prove that 1 tanx +tanx = 1 sinxcosx. 1 sinx cosx + sinx cosx = 1 sinxcosx cosx sinx + sinx cosx = 1 sinxcosx sin2x +cos2x sinxcosx = 1 sinxcosx …