sin
sin e
(C)
1- cos
(D)
1-cos
cosa + cos2B = 3/2 and sin a . sin B = 1/4
(C) 60°
(D) 90°
A+ cosec A) has value :
(C) + 1
(D) +2.
Answers
Answer:
Explanation:
1. A = 670°. 10 = 13+ 18 + Zin where nis. To=670+36on wheren is an integer ... Find a first-quadrant angle e, for which an angle five times as large as a will be in the ... Find the exact value for x and y. 10... x2 = 12 2 11. . 600/y3 = 38. 600 x = 2 2 2 ... 91=6'+8?21628]cos. C. -193-96 COSC. S58) B Sinys - Sin 76.9 şinys. Sini3.
sin A sin(2A+B) . 1-2 cos (A + B) sin A. 2 cot A. Gin sin 2A +sin 2B sin 2A -sin 2B tan(A+B) ... (i) cos (A-D) sin (B-C) + cos (B - D) sin(C-A) + cos (C-D) sin (A,B) = 0. (ii) sin 2A + ... (iii) co$2A + cos 2B + cos 2 (A-B) + 1 = 4 cos A. cos B. ÇOS (A-B). (iv) sin 2A ... (v) If a cosa + b sina = c = a cosB + b sinſ then prove that b. = 2-2. 22.
sinA=√1−cos2A=√1−25169=√169−25169= =√144169=1213 ,. and. tanA=sinAcosA=1213513=1213⋅135=125 . Answer link ... There are 2 opposite values of sin A, because, when cos A = 513 , ... =2kπ±1.176rad , nearly, ∈Q1 or Q4 ,. # k = 0, +-1, ... That means our triangle has a 90 degree angle for angle C. ∴a=5 ...
45-90. Label the sides with the correct exact values. 13 0² 2². 1+6² = 4. () + (x2)² = ... 1 cos 135º - z. 2. 5) tan 240° = 13. Cos 330° - 53. 3. 6. ) ) sin 300° -13 ... Frac kraw R+D VAI a) Cos A = 3 113 b) sin A = 2. 113 113. 113. 2 3 = c². 13-02. V13 =C. NO ... have to add or subtact any two of these angles to get that certain angle.