find the value of sin thetha if 7sin thetha + 9 cos tetha =11
Anonymous:
sin (theta) = 5/13 or 4/5
Hope, this is correct
sin (Φ) = 5/13 or 4/5
solve it. don't tell me only answer.
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Answers
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1)Let sin a = x and then cos a =√(1-x^2)
Use trigonometric identity :
sin ^2 (a) + cos ^2(a) = 1:
2)Substitute it in given equation .
3) Use quadratic formula to solve quadratic equation .
4) x = 5/13 or 4/5 .
Hope, you understand my answer .
For calculation process:
See attached file .
Use trigonometric identity :
sin ^2 (a) + cos ^2(a) = 1:
2)Substitute it in given equation .
3) Use quadratic formula to solve quadratic equation .
4) x = 5/13 or 4/5 .
Hope, you understand my answer .
For calculation process:
See attached file .
Attachments:
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