C **** trig.h.1 C **** /TRIG/ FOR TRIGONOMETRIC FACTORS NEEDED IN THE trig.h.2 C **** CALCULATION OF THE DERIVATIVES OF THE GEOMAGNETIC trig.h.3 C **** COORDINATES W.R.T. THE GEOGRAPHIC COORDINATES trig.h.4 C **** trig.h.5 COMMON/TRIG/CSLATM(ZIMXP1,ZJMX),SNLATM(ZIMXP1,ZJMX), trig.h.6 1 CSLONM(ZIMXP1,ZJMX),SNLONM(ZIMXP1,ZJMX),CSLATG(ZJMX), trig.h.7 2 SNLATG(ZJMX),CSLONG(ZIMXP1),SNLONG(ZIMXP1) trig.h.8 C **** trig.h.9 C **** WHERE: trig.h.10 C **** ZIMX=72, ZJMX=36, ZIMXP1=ZIMX+1 trig.h.11 C **** CSLATM = COS(THETAS) trig.h.12 C **** SNLATM = SIN(THETAS) trig.h.13 C **** CSLONM = COS(LAMDAS) trig.h.14 C **** SNLONM = SIN(LAMDAS) trig.h.15 C **** CSLATG = COS(THETA) trig.h.16 C **** SNLATG = SIN(THETA) trig.h.17 C **** CSLONG = COS(LAMDA) trig.h.18 C **** SNLONG = SIN(LAMDA) trig.h.19 C **** trig.h.20 C trig.h.21