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Evaluate the following:(iv)(Sin30^@+tan4...

Evaluate the following:(iv)`(Sin30^@+tan45^@-Cosec60^@)/(Sec30^@+Cos60^@+Cot45^@)`

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Evaluate the following:(iii) Cos45^@/(Sec30^@+Cosec30^@)

Evaluate the following:(v) (5cos60^@+4Sec30^@-tan^2 45^@)/(Sin^2 30^@+Cos^2 30^@)

Evaluate the following:(i) sin 60^@ cos30^@+sin 30^@ cos 60^@

Evaluate the following: (Cosec30^@+Cosec60^@+Cosec90^@)/(Sec0^@+Sec30^@+Sec60^@)

Evaluate the following:(ii) 2 tan^@ 45^@+cos^2 30^@-sin^2 60^@

Evaluate: (sin 30+tan 45-cosec 60)/(sec 30+cos 60+cot 45)

Evaluate the following. cos("sec"^(-1) 3 +"cosec"^(-1)3)

Find the values of :d. (5sin^2 30^@+cos^2 45^@+4tan^2 60^@)/(2sin30^@cos60^@+tan45^@)

Without using trigonometric tables, evaIuate the following: sec37^@/(cosec53^@)+2cot15^@cot25^@cot45^@cot75^@cot65^@-3(sin^2 18^@+sin^2 72^@)

Prove that:a. sec30^@ tan60^@+sin45^@cosec45^@+cos30^@+cos30^@cot60^@=7/2

R G PUBLICATION-REVISION-EXERCISE
  1. Find the values of k for each of the following quadratic equations, so...

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  2. Find the values of k for each of the following quadratic equations, so...

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  3. Find the values of k for each of the following quadratic equations, so...

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  4. Evaluate the following:(iv)(Sin30^@+tan45^@-Cosec60^@)/(Sec30^@+Cos60^...

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  5. Evaluate the following: (Cosec30^@+Cosec60^@+Cosec90^@)/(Sec0^@+Sec30^...

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  6. If Sin(x+y)=1,Cos(x-y)=sqrt3/2 and x>y,0^@lex+yle90^@ then find x and ...

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  7. Find the value : Sin35^@sin55^@-Cos35^@Cos55^@

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  8. Find the value : tan35^@tan60^@ tan55^@tan30^@

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  9. Find the value : Cot54^@/(tan36^@)+tan20^@/(cot70^@)-2

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  10. Find the value : 3Sin23^@/(Cos67^@)+4Sec47^@/(Cosec43^@)

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  11. Find the value : tan5^@tan25^@tan30^@tan65^@tan85^@

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  12. If sec5theta=cosec(theta-36^@) where theta is an acute angle, then fin...

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  13. If sinA=cos33^@,A<90^@. Find the value of A.

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  14. If sin 2A=cos(A+15^@) where 2A<90^@, find the value of A.

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  15. If sin(3x+10)=cos(x+24) then find the value of x.

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  16. Prove that tan^4theta+tan^2theta=sec^4theta-tan^2theta-1

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  17. Prove the following costheta/(1-tantheta) +sintheta/(1-cottheta)=sinth...

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  18. Prove that sqrt((sectheta-1)/(sectheta+1))=cosectheta-cottheta

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  19. Prove that cottheta+tantheta=secthetacosectheta

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  20. Show that: 1/(1+sintheta)+1/(1-sintheta)=2sec^2theta

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