9) cos A 11) sin Z 13) cos X 24 15 17 15) tan X 8 X 24 Y 10) cos Z 15 Z 12) sin C B 25 36 A 27 18 45 C 14) tan A 30 30 16) tan X 40 30 20 25 Z A

Evaluate  (sin600 cos300 + sin300 cos600 )

verify each identity 1) tan X sec X sin X = tan2X 2) (4sin2X-1) / (2sinX+1) = 2sinX-1 3) (sinX - cosX)(sinX + cosX) = 1 - 2cos2X

/(cos0 + tan@) de cos²0 - (sec@ + tandsec²0) d® A) True B) False

Find (In æ)tan(z)) Please select file(s) Select file(s)

verify the given identity 53) 1 - tan2x = (cos2x)/(cos2x) 55) sin2x - tanx = tanx cos2x

sin :) =_ co) - 87 ; cos 3

Which of these statements never can be true? A) tanx = 500 B) (05x = 0,999977 () sinxcosx= 5,000 Sinx = COSX D

Prove that: a) sin2(theta)/1+cos2(theta) = tan(theta) b) 1+sin2(theta)+cos2(theta)/1+sin2(theta)-cos2(theta) = cot(theta) c) sec8(theta)-1/sec4(theta)-1 = tan8(theta)/tan2(theta) d) cot(theta) cot(60-theta) cot(60+theta) = cot3(theta) e)cos5(theta) = 16cos5(theta)- 20cos3(theta)+5cos(theta) f) sin4(theta) = 4sin(theta) cos3(theta)-4cos(theta)sin3(theta)

By equating the real parts of cos5θ + j sin5θ = (cosθ + j sinθ)5 Show that cos5θ = 16cos5θ - 20cos3θ + 5cosθ Also, express sin5θ as powers of sinθ.