Page 1 :
Kashipur, Samastipur, Formula, , cs, , , , , , Trigonometric Functions, (frearnficta wert ), => 3A anit & i mee Geahimn of Trigonometric functions):, 3. cos ec?4—cot? A, , , , , , , , , , () cosec*d = 1+cot, (it) cosecd=y1+cot’ A, , (tii) cot? 4 = cosec*A—1, , , , (¥) cos A= VI-si, , , , 4 (WY) tan A= Ysec* 4-1 (WY) cot, , , , voosec", , 4. sin AxcosecA=1 5. cos Axsec A= 6. tan Axcot A 4, , , , @ sind=—— () cosd= (yan a~, 0s see cot, , 1 1 1 |, , (i) cosA= i) secd= 8 A |, sin A u cos A we tan A, , , , , , , , , , , , , , , , sec cos A cosec, 7. tand 8. tand= 9 cot A=—— 10, cot A, cosecd sind secA, > GM a (Additio Formula):, 1. sin(A+B)=sin Acos B+cos Asin B 2. sin(A—B)=sin Acos B-cos Asin B, 3. cos( A+B) =cos Acos B-sin AcosB 4. cos(A— B)=cos Acos B +sin Asin B }, tan A+ tan B tan A—tan B, 5. tan(4+B)= 6, tan(A-B), 1-tan Atan B 1+tan AtanB, |, cot AcotB ih tan A + tan B + tan C — tan A tan B tan C, 7. cot(A+B)= = 8, tan(A+B+C SUE EEE EUUEET REITIUETF SEUSS, cot dkcotB 1—tan A tan B - tan B tan — tan A tan ( q, , , , i aftads (Transformation of Products its Some or differences ):, , , , = Toe wt aya sre, , sin A-cos B 2. sin(A+B)-sin(A~B)=sin? 4—sin? B, , , , 1. sin(A+B)+sin(A-B)=, , , , , , 3. cos(4+ B)-cos(A—B)=cos* A—sin’ B= cos* B~, , cos A.sin B 13. cos(A+ B)+cos(A-B)= 2, , , , 12.¢sin( A+ B)-sin(A-B), , , , cos A.cos B |, , , , , , , , , , , , , , , , , , , , , , , vA (C+D) (C-D), , 14. cos(~ B)-cos( A+B)=2sin Asin B 15, sinC-+sin D = 2sinl “> |eos| =| |, D=2 Ee 2 cos C +c08 / E+D) of C=D), , 16, sinC-sinD = 2eos{S 5 }i(S 17.6 : 5 hex >} |, , , , , , ——————, MODERN SCIENCE COACHING [RR DIRECTOR:- SACHIN KUMAR