Question

Find tan 15 degree and hence prove that tan 15 degree + cot 15 degree= 4

Answer 1

Step-by-step explanation:

From trigonometric angles and sub-angles, we know that 2sinxcosx=sin2x. Now, as we know that the value of sin30∘=12. Which is equal to the Right- hand side value, that means tan15∘+cot15∘=4. Hence, we prove that tan15∘+cot15∘=4.