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Answer:
(1+ sin¢ ) (1 - sin¢ ) = 7/23
Step-by-step explanation:
Given :- Tan¢ = 4/√7 = perpendicular (p) /base (b)
hypotenuse "h" = √p²+b² = √ 4²+(√7)² = √16+7 = √23
- ∵ (1+sin¢) (1-sin¢) = 1-sin²¢ = cos²¢
- cos²¢ = (base/hypotenuse)²= (√7)²/(√23)² = 7/ 23
∴ (1+sin¢)(1-sin¢) = 7/23Answer
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(Sintheta+1)(sintheta)= (2)(1/4)=1/2 I hope this answer helped you mark me as brainliest
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