Introduction to Trigonometry
From the given figure, find the value of the following: sinC
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Write all the other trigonometric ratios of ∠A in terms of secA.
If tanx=43,0<x<90∘, then what is the value of sinx?
Without using trigonometric tables, prove that:(sin65o+cos25o )(sin65o−cos25o )=0
If cotθ=815, find cosθ and cscθ.
Without using trigonometric tables, evaluate:cos74o sin16o
Prove each of the following identities:(1−cos2θ)csc2θ=1
If cot θ=3/4, show that (secθ+cosecθ secθ−cosθ ) =71