Home
Class 12
MATHS
If tan 25^(@) = a, prove that, (tan 155...

If `tan 25^(@) = a`, prove that, `(tan 155^(@) - tan 115^@)/(1 + tan 155^@ tan 115^@) = (1 - a^2)/(2a)`

Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC RATIOS OF ASSOCIATED ANGLES

    CHHAYA PUBLICATION|Exercise SAMPLE QUESTIONS FOR COMPETITIVE EXAMS - MULTIPLE CORRECT ANSWERS TYPE|5 Videos

  • TRIGONOMETRIC RATIOS OF ASSOCIATED ANGLES

    CHHAYA PUBLICATION|Exercise SAMPLE QUESTIONS FOR COMPETITIVE EXAMS - INTEGER ANSWERS TYPE|5 Videos

  • TRIGONOMETRIC RATIOS OF ASSOCIATED ANGLES

    CHHAYA PUBLICATION|Exercise EXERCISE - SHORT ANSWER TYPE QUESTIONS (4 marks)|23 Videos

  • TRIGONOMETRIC INVERSE CIRCULAR FUNCTIONS

    CHHAYA PUBLICATION|Exercise sample questions for competive examination|20 Videos

  • TRIGONOMETRIC RATIOS OF COMPOUND ANGLES

    CHHAYA PUBLICATION|Exercise Comprehension Type|6 Videos

Similar Questions

Explore conceptually related problems

If tan 35^(@)=x , then prove that (tan 145^(@)- tan 125^(@))/(1+tan145^(@) tan 125^(@))=(1-x^(2))/(2x)

tan25^@=a prove that (tan155^@-tan115^@)/(1+tan155^@.tan115^@)=(1-a^2)/(2a)

Prove that, tan 35^(@) + tan 10^(@) + tan35^(@) tan 10^(@) = 1

Prove that, tan 70^(@) = 2tan 50^(@) + tan 20^(@)

Prove that, tan62^(@) = 2tan 34^(@) + tan28^(@)

Prove that tan 70^@ = tan 20^@ + 2 tan 50^@ .

Show that tan 48^(@) tan 16^(@)tan 42^(@) tan 74^(@) =1

Prove that tan 1^@ tan 2^@ tan 3^@........ tan 88^@tan89^@=1

Prove that tan 70^@=tan 20^@+2tan50^@

Prove that, tan 1^(@) tan 2^(@) tan 3^(@).....tan 87^(@) tan 88^(@) tan 89^(@) = 1 .