Question

1
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(c)
Evaluate the value of tan A if cot B = 2m + 1 and A+B -
4.
22. If A + B = 45° then prove that:
(b) (1 + tan A) (1 + tan B) = 2
(a) 1 - tan A.tan B = tan A + tan B
(C) (cot A - 1) (cot B - 1) = 2
234 Illustrated Optional Mathematics-9
(d) (cos A - sin A) (cos B - sin B) = 2sin A.sinB​

Answer 1

Answer:

I don't know am really sorry