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Prove that please send photo explanation |
| Answer» EXPLANATION:To Prove :(1 + tan²A) (1 + sinA) (1 - sinA) = 1Formula to be used :1 + tan²A = sec²Acos²A = 1 - sin²Aa² - b² = (a + B) (a - b) sec²A = 1/cos²AProof :LHS(1 + tan²A) (1 + sinA) (1 - sinA) => (sec²A) (1² - sin²A) => (1/cos²A) (1 - sin²A) => (1/cos²A) (cos²A) => (cos²A/cos²A) => 1RHSHence PROVED!! | |