(-d)(- ) (b-c)(d-b) sin x cos x tan x =k, then be+ 14. If ak is...

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(а-d)(с- а) (b-c)(d-b) sin x cos x tan x =k, then be+ 14. If ak is equal to a b. ck 1+ bk a+ a 3) 4) k 15. The minimum value of the expression sino+sinB+ siny, where o, B,Y are real numbers satistying +B+Y=t is 1) positive 2) zero 3) negative 4) -3 16. If tan octan B+tan Btan y+tan y tan o+2 tan atan Btan y=1 then the value of sin o+sin B+sin y= 1) 0 2) -1 3) 1 4) 2 7-5cot0 17. If tan 0,2 tan 0+2, 3 tan 0+3 are in G.P then the value of is 9-4Vsec e-1 12 -33 33 12 1) 5 2) 28 3) 100 4) 13 18. Two ares of same length of two different circles subtended angles of 25° and 75° at their centres respectively. Then the ratio of the radii of the circles is 2) 1:3 3) 1:2 4) 2:1 1) 3 :1 19. If tan 0+ sine = m and tane-sin0=n, then 2) m² + n² = 3) m² - n² = m² +n² 4) m² -n² =4/mn 1) m2 -n² = 4mn %3D cosx then 2. cosx+ sinx 20. If elsin x+sin" x+sin x+)log2-8 and0<x<- V3-1 3) 3+1 2 4) 3-1 V3+1 1) 2) (а-d)(с- а) (b-c)(d-b) sin x cos x tan x =k, then be+ 14. If ak is equal to a b. ck 1+ bk a+ a 3) 4) k 15. The minimum value of the expression sino+sinB+ siny, where o, B,Y are real numbers satistying +B+Y=t is 1) positive 2) zero 3) negative 4) -3 16. If tan octan B+tan Btan y+tan y tan o+2 tan atan Btan y=1 then the value of sin o+sin B+sin y= 1) 0 2) -1 3) 1 4) 2 7-5cot0 17. If tan 0,2 tan 0+2, 3 tan 0+3 are in G.P then the value of is 9-4Vsec e-1 12 -33 33 12 1) 5 2) 28 3) 100 4) 13 18. Two ares of same length of two different circles subtended angles of 25° and 75° at their centres respectively. Then the ratio of the radii of the circles is 2) 1:3 3) 1:2 4) 2:1 1) 3 :1 19. If tan 0+ sine = m and tane-sin0=n, then 2) m² + n² = 3) m² - n² = m² +n² 4) m² -n² =4/mn 1) m2 -n² = 4mn %3D cosx then 2. cosx+ sinx 20. If elsin x+sin" x+sin x+)log2-8 and0<x<- V3-1 3) 3+1 2 4) 3-1 V3+1 1) 2)