Class-X Trigonometry part-26 by Rahimuddin Sheikh
Prove that: (viii) (sinA+cosecA)²+ ( cosA+secA)²= 7+tan²A+cot²A (ix) (cosec A-sin A ) (sec A - cos A )= 1/(tanA+cotA) (x) (1+tan²A)/(1+cot²A) = ((1-tanA)/(1-cotA))²= tan²A
Prove that: (viii) (sinA+cosecA)²+ ( cosA+secA)²= 7+tan²A+cot²A (ix) (cosec A-sin A ) (sec A - cos A )= 1/(tanA+cotA) (x) (1+tan²A)/(1+cot²A) = ((1-tanA)/(1-cotA))²= tan²A
