Question

H. M. Mathematics (Class 10)
Very Short Answer Type Questions
Find the values of the following:
6. tan 25º – cot 65°.​

Answer 1

Let us calculate the value of cot 65

Cot 65 = cot (90- 25) = tan 25

Since it involves 90 therefore tan will be changed to cot and 90- 25 remains in 1st quadrant therefore cot 65 will be written as tan 25.

Now tan 25 / cot 65. = tan 25/ tan 25 = 1

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