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9., , . If sin {sin“*(2) + cos~*x } =1 ,then the value of x is, , , , (A)= @) 1 ©o ©), , If tan~*x + tan™*y + tan™'z=2/2 .x,y.z >0 , then the value of xy+yz+zx is, (A)> ®1 ©o (D) not defined, , If sin“*(1 — x) - 2sin“*(x) =% then x is equal to, , (A) 05 Biz Oo ©);, , Cos~*(cos)) is equal to, , (a= @)= ©* >, , If3sin™ (=) - 4cos“* ==) + 2tan™* *) = Sthe x is equal to, , Az 8) v3 1 (D) hot defined, Which of the following is the principal value branch of cos~*x, A471 B®Om Or MOm-{5}, , If3 tan-'x +cot~'x =7, thenxequals, 1, , (A)o (B)-1 (C) 1 @) >, . The value of the expression 2sec~!2 + sin“*(=) is, A; @ = ©1 ©) >, tan“*x + tanty~=tan-*=* is true for, “xy, , (A) xy OR\B) D> 1Lll>1 ©bl<1lyi<1 ©) x<!1, , 10. tan-*¥3 - sec~*(—2) is equal to, , 2a, , (Aja ®)= (© -5 @ =

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11., , 12,, , Question No. 11 to 15 are based on the given text. Read the text carefully and answer the, questions:, , , , Two men on either side of a temple of 30 meters high observe its top at the angles of elevation a and 3, respectively, (as shown in the figure above). The distance between the qwo men is 40\/3 meters and, the distance between the first person A and the temple is 30),’3 meters., , ZCAB = a=, a sin? (3), b. sin"(2), ic sine"(, d. sin?, , ZCAB>, i. cos, , tal, —, , wae, ay, , 2, , ii cost, , a, —, , «| ele ol 1, , E, 13, , “, acing crate, cle, —, , iv. cos

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13, ZBCA= 8 =, , a. tan? (3), b. tan (3), , c tan (2), , gf =a |, 4. tan (=z), To practice more questions & prepare well for exams, download myCBSEguide App. It provides, , complete study material for CBSE, NCERT, JEE (main), NEET-UG and NDA exams., 14, ZABC, a, b., c, d., , 15. Domain and Range of cos“! x =, x F, a (1,0), |-F, |, b. [-1, 1], (0, +], , ce [1,1], ©, 2), d. (-1, 1), (0, x), , elasiselaels