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If t a n A=cot B , prove that A+B=90^@...

If `t a n A=cot B` , prove that `A+B=90^@`

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RD SHARMA ENGLISH-TRIGONOMETRIC RATIOS-All Questions
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  3. If t a n A=cot B , prove that A+B=90^@

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  4. If sec5A=cos e c\ (A+36^@) , where 5A is an acute angle, find the va...

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  5. If s e c4A=cos e c(A-20^@) , where 4A is an acute angle, find the ...

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  6. Evaluate the following: (i) (sin20^@)/(cos70^@) (ii) (cos19^@)/(sin71^...

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  7. Evaluate the following: (i) (sin21o)/(cos69o) (ii) (tan10o)/(cot80o...

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  8. Evaluate the following: (i) ((sin49^@)/(cos41^@))^2+((cos41^@)/(sin4...

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  10. Evaluate the following: (i) (tan35^@)/(cot55^@)+(cot78^@)/(tan12^@)-...

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  11. Evaluate the following: (i) cos e c\ 31^@-sec59^@ (ii) (sin72^@+cos...

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  12. Evaluate the following: (i) sin35osin55o-cos35ocos55o (ii) tan48ot...

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  14. Express each one of the following in terms of trigonometric ratios ...

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